Buy it new from Jomashop, they can't be beat and they are a solid company.
I have recently purchased a Oris 65 and a Breitling Chronograph from them and probably saved almost $2,000 in the transactions.
A manufacturers warranty is fine, but paying another $500 to $1,000 to get it, isn't worth it in my estimation.
Jareds wouldn't budge less then $1,800 on the Oris, got from Joma for $1,100. Tourneau's wanted $4,300 for the Breitling, taxes included, and I picked it up from Joma for $2,700
1996 Sub, 3. Sinns 1. Omega vintage dress watch 3 Citizen Signature automatics, 4 Eco Drives, 2 Tag Heuers, 2 Accutrons, 2 Orients, 5 Seikos, 2 Invictas, 1 Pulsar 2 Tissots 1 Skagen and 1 Victorinox Swiss Army, Longines Legend Diver, Steinhart Smurf. and an Eterna Kon Tiki date. Oris 65 Oris Arctix, Borealis Estoril, Wenger Arctic Light, Breitling Colt Chrono