I am using dremel. Personally i find dremel seems to be more solid in design and grip and has a variety of attachments and support like flexi shaft, benches etc. Depending on your applications, 5000rpm will give you more control at slower speeds. Most of the ranges are 10000 above for cutting etc. Can try Sg tooling see if better prices as they have a wider range.
http://shop.sgtooling.com/index.php?act=viewCat&catId=26