Instruct: Classify Amazon reviews into positive or negative sentiment
Query: best mechanical pencil, used throughout high school and college

I've been using this pencil for years. It has a very sturdy and balanced feel, and none have ever failed me. It does not waste much lead at the end. Also, I am addicted to the precision of the 0.5mm. In addition, the eraser is a very practical length so you don't need to replace it every month. The only reason I've ever had to buy new ones was because kids in high school would either steal them, or I'd lose them. The one I have now has been with me for 3 years, and the lead hasn't slipped once. I've tried many others pencils, but this is my all-time favorite that I've used for years.I highly recommend this buy. For just 6 bucks (how easily is that spent anyway?), you'll get a great pencil that will last you for years. Just don't lend them out -- people tend to like them a little too much! :)