If you stick with a quality brand - Cuisinart, Braun, KA, etc and a 200 watt motor, you should be OK. I wouldn't spend $100 on one. I think mine cost $25. When it eventually breaks, I won't have a problem replacing it.
Bottom line is you have to be comfortable with your choice.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan