I have a Gammill Classic Longarm machine. I bought it ten years ago from Cowles Quilting in Vermont. I've never had any major problems with it at all and it's a great machine. I had the new tracking system put on it a year ago and that improved the handling of it a whole lot. So much easier to drive now.
I've been quilting for customers for ten years now and absolutely love what I and totally enjoy not having to drive somewhere else to work!