It's not on the list but I agree with bender -- I'd suggest the IWC Pilot Chrono. Or the IWC Portuguese 7-Day Power Reserve. Or the Ingenieur.

But if you're limited to your list, I'd get the IWC Pilot Mark XVI. Nice, classy and not common.

After those, my preference would be Ball. Good value and distinctive.

The Omega PO would be next.

Rolexes, I think, are too common and I also don't like how they look: Usually pang-matanda or sobrang kintab kaya nag-mu-mukhang D.O.M.. I wouldn't want the Panerai -- I think it's too faddish. Uso lang the past few years.

P.S. I'm no expert. Just my two cents.