I love wrist watches, and have researched what I ultimately wanted in a watch for the last 15 years. I currently own 8 watches, including 3 Seikos(1 to be given to my brother-in-law for the Holidays), a vintage Gruen Curvex, a Tag-Heuer Formula 1, 2 G-shocks, and and a Yaoized O&W which I am giving to a friend for the holidays
Mechanical watches are not inherently superior to quartz watches(as a matter of fact, Seiko makes fine time-keeping watches) except for one thing-they can be rebuilt, making it a true lifetime watch.
That said, for me, Rolex was the only choice, and I recieved a Sea Dweller as a gift from my mother two weeks ago. It has lost 20 seconds in that two weeks. It is rated at 4,000 feet.
Depending upon your needs and desires, Sinn, IWC, Bell & Ross, Breitling, Panerai, Rolex, and Omega all make excellent watches.
I have a friend who owns an Omega Planet Ocean and he loves it. It is a BIG watch, with an excellent movement, loses a few seconds a year(less than 10, I understand). Panerai makes some of the largest watches out there.
Omega, IWC, and Breitling are available at Costco, and represent excellent values. Rolex can be purchased on ebay for about $1,000 less than we paid new, but a warranty and piece of mind can also be priceless.
Good luck in YOUR search for the perfect watch, I have found mine.
Best Regards,
STeven Garsson