I bought the Porter Cable "whisper series" a few years ago. They screeched like fingernails on a chalkboard. I can just see the marketing meeting where they came up with that one! I love Makita stuff in general, but for 4x24 belt sanders, I went with Bosch. We have 3 and although we go through the brushes, they've stood up pretty well over the years, and they really get used hard in our shop. I had one lose a front bearing, but it was a cheap repair. CB.