Ulysse Nardin

... Gerard-Perregeux.
UN Maxi Diver possess true sea "person", but I would not put the given watch in one number neither with Sea Hawk nor with Sport Evolution. Why? The movement. Let it and personalized by company UN, but nevertheless is not present in it aura Ulysse Nardin.
At Glashutte the fine mechanism, but is not present true sea spirit.

p.s.
Forgive for criticism UN. I very much love this company for innovations, but... At me it is too much "but" to it. But perhaps only at me

Dmitry.

don't you?

... but for starting, please permit me to correct two small errors:

The UN Maxi Diver is rated to 300 meters, if I recall correctly, and the GO Evolution Sport does not come with both, the steel bracelet and the rubber strap. You have to purchase the other one extra.

Hhmmm ... it is difficult to give a good advice. Honestly, I like all three of the watches you mentioned, and I would even add another one to this list: the Chopard Deep One.

Of all these watches, the UN has the least unique movement, since it is based on the ETA 2892A2. So if a so-called in-house movement is really important to you, you have to drop the Maxi Diver. BUT: Especially for a sports watch that is exposed to more hazards than a more elegant timepiece, it is not at all wrong to use movement parts that can be repaired, or better: replaced by any well-trained watchmaker around the world. but how many watchmakers are able to repair a Girard-Perregaux cal. 33 , or a GO cal. 39 movement? They have to send it to the company, or national service center at least, since they would not get any parts, when they are not authorized dealers for the brand.

Regarding functionality, the small date windows, sunk into a deep tunnel, as offered by UN and GP are clearly inferior to the large panorama date of the GO. Also the clever micro-adjustment of the GO's steel bracelet is unique. On the other hand, the power reserve hands of the UN and the GP are horologically interesting, and give these watches a very special and unconventional appearance. The UN's small second hand further increases this effect. I would say, from the three you mentioned, the UN is the most unconventionally designed, including the dial structure and the semi-skeletonized hands.

I think the decision is likely to be based on style, and sympathy. And nobody can help you here, I fear ...

Regards,
Marcus

Thanks for all the info.

Marcus, actually according to the Catalog the Maxi Diver is only rated to 200 meters, where the 40mm diver is rated to 300 meters.  Don't know why the difference.   The GO dealer is throwing in a Go rubber strap for free with the purchase.  The UN Dealer is throwing in a nice teak wood 4 watch case.  The UN with SS bracelet cost about $1000 less than the GO. 

Actually went and looked at both the GO and UN yesteday.  HAve to say the UN, both the diver and chronometer, smiled at me more than the GO.  The GO has a great case, bracelet, and the movement which you can see through the back is really great.  A great company GO is.   But, the UN just has a much more interesting and pleasing to the eye dial.  Unique, sporty, and classic vintage all in one.  THe Bracelets are very comfortable as well.   And the lum is what really sold me. 

Seems on a lot of the watch forums, any watch that has a ETA movement instead of a 100% in house movement is critized.  Well here are my thoughts.  ETA makes some good reliable proven movements, and they make different grades of movement.  Now, of course I like the highly decorated unique movements that some manufactures make themselves.   But, there are some really nice watches with ETA movements.  A lot depends on the company.  Does the company just take a produced completed ETA movement and throw it in a case, seal it up and sell it?  Or do they get parts kits of a movement from ETA and then inspect each part, polish, decorate, fine tune and file any rough spot, and maybe add a few extra parts of thier own.

From what I understand UN has the ETA 2892 movement with 21 jewels.   But then they add their own seconds hand and pwere indicator and an additional 7 jewels.   The movement is only the parts, which then UN inspects, polishes, fine tunes etc. and perfects.

THere are some god companies like Omega, Breitling, IWC, UN, and Panerai that really fine tune the ETA parts and have great quality.  I read though that ETA in the near future will stop sending out parts kits and only produce completed movement.

To me it is not much different than in the custom gun world.  Many fine makers of 1911 pistols, but most do not make all their parts.  They start out with a stock Springfield or Colt.  Then by parts from Ed Brown, Wilson, etc.. THen they fine tune, file, maybe produce and few parts themselves, and then complete..

Same way with Custom Motorcycles.   No one would argue that OCC makes some of the finest custom choppers out there.  But they get there parts from other manufactures. 

Also, as one member told me, one thing nice about a simple ETA movement is that you can have just about any competent watchmaker around the world work on them.

Well,  after all the comparison, though I really do like the GO, think I will have to go with the UN.

Also, a little testiomny, I first heard of UN several years ago when a friend of mine I worked with in Cambodia had a UN GMT +.    He went swimming all the time with it, skydived with it, travelled through asia with it, wore it dueing many shooting competitions and while training Cambodian military and it helpd up real well for him.  So that kind of got me to looking at UN Watches.

Nevertheless of their UN-26 based but developed and assembled ETA2892-A2 caliber, but for their distinctive marine-diving-sporty look. 
I checked for GP , but they seemed too "fat" for me, and alive they didnt' impress me...

Regarding GO, I like their caliber inside and this going upper and upper manufacturer, but the design of Sport Evo is.... not very impressive for me.

BTW, I suppose that UN-26 ( based ETA2892) is the most robust, exact and easy-to-service among these 3 calibers.

So , it's ur choice

When you own a bautiful Maxi Marine Diver, what you see is one of the nicest craftsmanship possible on a Marine timepiece with a real "Marine" orientation (the anchor, the ocean chronometer look, the history etc...) plus this very special "golf ball type" dial.
What you don't see is the so controversial (but how bad can it be if everybody is using it in one shape or another?) ETA 2892 that does a very nice job at being quite accurate and always rates well in various testings.

In addition, once you fix the couple of SS bracelet pins with loctite, this timepiece feels really solid.

I do have to admit that all the talks around ETA2892 do disrupt a person and sometimes you wonder if your watch has a good value. I also realized, after selling my Explorer II, that only Rolex will give you back your value in that price range, not even IWC, GO, GP or Blancpain. So you buy a watch for yourself not the people around you.

In the end, the final decision will remains yours.
Regards,
Yves

I bought the Seahawk II Pro in 2005. The watch kept great time (+4 seconds), but the second hand was sticking around the date window. It slowed down, then jumped ahead. It got progressively worse. I had not dived, nor I exposed this watch to water. Took it back to the store - they gave me a new watch.
The new one worked great, until one morning I looked at it and it was 40 minutes behind. The power reserve indicator was at 70% or so. I thought I was dreaming, set the watch to the right time and for a couple of months had no problems. Then it started again, and never disapeared. The watch could stop completely with the full reserve. The watch was never exposed to any harsh conditions, never saw water, the crown was always screwed in al the way.
I wanted to have it repaired, but I was told it could take several months.
I could not E-bay it, since it had this defect, so went o to a dealer and exchanged it to Panerai Luminor Power Reserve.
Its ETA instead of GP300, but it works.
By the way, my wife's everyday watch is GP Lady F. It is 10 minutes a week fast.

MS