What mixer do you use for bread dough?

I have read several posts and have seen some written reviews on the different mixers...but I'm curious, what do you use?  I want to start making bread from home (I used to make for a local deli using their Hobart) and am wondering if a Kitchenaid Pro 600 (a vintage one) will work fine. 

Can you please let me know what you use and what your experiences have been with other mixers?

Thanks