As they're very complementary...
With the Non Cosc Sub, you'll have a nice, a very nice and a timeless Diving Watch.
With the GO Senator Navigator, you'll get one of the nicest, if not the nicest Big Pilot watch...
Well, now that I think about it...Frome the Air to the Depht...it remembers me something..The meaning of the Logo Panerai!
So, buy a Panerai and with one watch , you'll get 2! LOL
Best.
Nicolas