1. Explorer II 39mm it´s beautiful and it´s not a small watch - the dial fills all the space; the GMT works perfectly, wear it even more since it sits on a black croco; It´s classic, it´s dressy, it´s sporty, it´s got a touch of adventure and exploration, not overstated and it slides very well under the cuffs, very very good lume
2. The PO You´ve chosen is the one I like most, have put it in the favs for the future, different kind of watch
3. Forget the Pro-hunter GMT - classic Pepsi or Coke or the blue-black ceramic Sub
4. Prefer the PAM 186 Arctos GMT with date (special price on Toro)
or any of the Flybacks
Best is to get 2 different ones out of the 4. Good luck with choices You will like any of those