I have some old Hitachi model (I think). It was a gift, so I didn't get to pick, but I've been pleased. I often use it to mix up dough for bread or pizza; I have small hands and chronic eczema that gets irritated by being coated with dough, so the hand-kneading is not my favorite thing to do.

It was a godsend during the nine-month-long kitchen remodel, during which time I cooked with the microwave, the crockpot, the rice cooker and the bread machine.