Speedmaster 57's

It really depends on what you are really looking for, if you want the look of the original issue Speedmaster dial, and steel bezel, but want a modern movement then the newer ones are a reasonable choice. They are pretty thick but if you have a decent sized wrist that really isn't an issue, try them on and see how it works for you. But if you really like that original Speedmaster look the Trilogy Speedmaster may be a better option. I have a Trilogy Speedmaster and it is a very easy watch to wear, a compact size and pretty authentic to the original.

You mentioned you can get one of the 57's at a good discount, but that should never be the reason to buy something. We've all done that at one time or the other and lived to regret it. Buy what you want, don't let the price dictate your selection.