I'm of the other opinion, I think the P.O is a better watch than the Sub in it's current form. The big definining factor is simply the clasp. You have to bear in mind that the 16610 is a 20 year old watch, for all intents and purposes, and it certainly feels that way on the wrist. You'll miss the P.O's heft, certainly.
My advice? Hold onto the P.O for another year until the new Sub comes out, then I'd think about making the jump to Rolex
