I own several Dremel and B&D RTX rotary tools. the one that gets used almost everyday is my Foredom Tool. They cost plenty, but if you go to Lowe's, Home Depot, or Grizzly Industrial get the Foredom model for woodcarving. It generally runs under $200 and will take all of your dremel burrs as well as bigger ones. I have the woodcarving Foredom, because of price, and i have done nothing to it other than lube the cable 2 or 3 times a year for the last 8 years. I made a swivel hook for hanging it and the foot control is excellent. Gunsmith houses will sell the big one, but for the home shop or if you have better tools for heavy metal work get the cheaper Foredom.
My Dremels, however, are my go to portable tools. My Black and Decker RTX hasn't had an issue in 10 years of (hard) use, and neither have my Dremels but I've only had the current ones for about 5 years.