there's no single answer to this question...
it all depends on:
1) how much do you want to spend,
2) what attributes are most important to you (case, dial, lume, CG, crown, CP, movement, caseback, crystal, etc, etc),
3) timing (do you want it fully modded now or over-time, do you want to mod it yourself, with modders, with dealers?, or is stock good enough?)
4) comfort with buying from dealers, members, etc......
you really need to contemplate what you want and read/research rep PAMS - their features, deficiencies, etc...
good luck!...
R-