I have had a few TLRs (still have an MPP Microcord) and if I were buying one I would worry more about mechanical reliability than the make and model providing you avoid the absolute dogs. I have had winder problems with Minolta and Yashica and it was a designed-in feature of the MPP Autocord I think. All the shutters tend to run slow, after all they probably haven't had any attention for 40 years and you wouldn't expect a watch to be at it's best after that time without cleaning.

They can all pretty well give very acceptable results and are great fun to use in a limited way. If the style of shooting really grabs you you will have to save up for a recently serviced Rolleiflex.