Braun Power Max blender MX 2050:
Yep, I bought it because of CR recommendation, and has been said, the plastic drive teeth (on the pitcher side) break, or in my case, just wear down and no longer engage.
If the only operators in the house were competent people that made sure the blender was completely seated before being used that could be avoided. Given all the complaints, most of you out there aren't competent, or you have someone living with you or visting that isn't. Tough odds to go against. :-)
I do like the blender performance, and big glass pitcher. Better than most.
My wife likes making smoothies with lots of frozen fruits. I'm just going to look for a smoothie shop going BK and buy one of their commercial units.