Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Tried 3 of Them Before I gave Up!

I would strongly recommend no one buy this tool! The first one I got wouldn't track at all so back it went. The second one tracked much better, but the rear berings started sounding like a washing machine with rocks in it...back it went. The third and final one tracked so so, but it ended up not spinning (belt would not move) when you pressed the trigger. Back it went and I will now try the Porter Cable 360 VS or 362 VS.After this experience I doubt I will try any of their other tools.