Personally I wouldn't recommend anything other than an authentic Dremel.
I've got a Dremel "Multi-Pro 395" which I've had for probably a decade now. Has never let me down and I have used it to tackle some pretty serious jobs (cutting stainless steel, mild steel etc).
I have a load of accessories for it which is another reason to go with the genuine Dremel as there is an accessory to suit every job you could imagine. I have a 90degree head, mini chop saw, router tool, blade sharpener and much more.
Dremel retired the 395 series years ago though now and replaced it with the "3000 series" I believe which is what we use in work for a multitude of tasks.
Also the Dremel "SpeedClic" system they've come out with for their cutting accessories & sanding accessories is fantastic.
Link: http://www.dremel-di...alog/index.html