What is your dream mixer if not secret? I returned the Bosch universal plus resently because I did no like it. Niw I am looking for perfect mixer for home use and thinking to get Hobart n50 or c100 I agree with you. There are many reprinted junkies, I prefer to spend more up front and buy a new unit rather than buy used and spand more money and time on it unless if you are lucky ad find really honest seller.
For a home mixer, the N50 is great (I have one I restored). It's heavy, expensive and built like the proverbial brick outhouse. If you need larger capacities than about 1-1.5kg dough batches, you might want to move up to a 10, 12 or even 20 quart model. The larger mixers aren't so adept at smaller batches though, so you do need to consider how much you will usually be making.
For just mixing dough, there's general consensus that spiral mixers are better - but at the expense of the versatility of planetary mixers. Diving arm and other more exotic types are also great for dough, but little else (and are harder to find in home-sized capacities).