Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Design flaw - lever springs wear out quickly

My wife has had several of these and loves them - until the lever spring (that gives it the clamping action) fails. The spring has a little metal roller on it that - after repeated use - wears out and slides down to the base of the spring. When that happens the clamping action of the lever is gone. They maker obviously knows about the design flaw because they include one extra spring in the box. That's great if you didn't throw it out with the box and are handy enough (and have a screwdriver) to replace it when needed. Unfortunately, the spring seems to wear out after ~6 months of daily use.Like many others I'm getting tired of throwing things out prematurely so at my urging my wife is looking for another brand this time around. Problem is they all seem to be made in China - which is where the quality seems to be the most questionable. Any brand suggestions?