I don’t think you can go wrong with a sherline. They have lots of options incl 8mm collets. A very good tool for watch/clock work. I think parts mix and match between lathe and mill. Always useful for small work.
These days I think most of the options have their place so you can pick any. The trick is to find a reason to pick one of them and then remind yourself that is why you made the choice. Sherline extensability, 8mm collets, CNC conversion, watchamakers tool rest, would do it for me.