Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Powerful blender with parts that break

I don't care what Consumer Reports says, I would strongly discourage anyone from buying this blender. Although it has a strong motor and is easy to clean, I cannot tolerate the fact that the blade part has plastic teeth that hook into the base and these plastic teeth break very easily.After almost all of the teeth snapped out - after normal use - I called Braun and spoke with their customer service person who admitted that this was a design flaw and that they had received many calls about this. He offered to send me a new part. It took three months for them to deliver the part because the demand for replacements was so great!And here I am again a few months later - after very infrequent use, the plastic teeth are snapping off. I am thoroughly disgusted with this product. It is really a shame because it is otherwise a good blender.