The key difference between the two is that the 5070P is made using the
Nouvelle Lemania movement, which is being phased out. The 5960P
has Patek's new inhouse movement. Not only will the 5960P's
inhouse movement be availble for a long time, but that movement, being
a modern one was designed to require much less work adjusting it
(according to Stern Sr. himself), so it is designed for a much larger
eventual production run than the watches with Nouvelle Lemania
movements have ever had. So, don't worry about passing up the
opportunity to buy a 5960P. It will be available for quite some
time. If you want to buy it new from an AD, you should find it
even easier to acquire as you wait, and you should see better and
better discounts as dealers try to move them. If I were to buy a
5960P, I wouldn't pay more than 70% of retail for a new one now, and as
production gears up, I wouldn't even be inclined to pay 70%. If
you don't mind buying a pre-owned mint 5960P, the large production run
should mean that you can get one for a very good deal.
The 5070P is the watch that is going to require some effort to acquire,
and I'm afraid if you plan to wait until you can buy it from an AD new,
you may end up never getting it before the Nouvelle Lemania is
completely discontinued. If you really want it, I believe it will
require being willing to get it pre-owned. With the 5970, I
warned that waiting at the AD for a new one is not a good idea.
Well, when white gold and rose gold was discontinued, the prices on the
secondary market shot up, and people who were waiting for one from
their AD suddenly had a much higher price to pay. So, my advice
is act quickly if you want a 5070P.
By the way, I believe the 5070P is a very collectible watch. I
haven't bought one though, because I can't get over the aesthetics of
the large 42mm case housing such a small movement, and seeing this
disparity when I look through the display back.
Eric von Schonberg