Both quite nice and useful for what they are intended for, but they don't have similar purposes, although their usage can overlap. I'd compare them more as a Ford F-250 4x4 compared to a Chevy Impala. The Foredom is more or less fixed in place, heavy, industrial and in general an excellent tool. It is portable, light, and extremely handy. I use a Dremel tool a lot, compared to the Foredom. I worked as a manufacturing bench jeweler for 7 years so am quite familiar with use of a Foredom.
