The FOIS, my first and only watch now. Got it two months ago and still love it whenever I read the time! I also think of ridiculous (unnecessary) use cases all the time to make use of the chronograph. LOL
Sticking to Omega for now, as it's an Omega forum - I have to limit myself somehow!
The 1948 Seamaster is about the only watch I have owned that the crystal really is almost invisible