I really like the black version. The difference in the bands is how the leather is "tanned".
Definitely the silver/gray one, although the black doesn't look bad either. Brown leather band on the silver watch would look great
I like the Grey one but because of the silver bezel. I think there's a lot more bands you can change and match with it. Can't put a silver metal band on the black one.
I would love to have the grey one, but the black one is nice too though.