I got a Black and Decker Wizard as a gift from my father-in-law about a month ago, and it's now an extension of my right hand in the shop. It's much like a Dremel. This model is rechargable, battery-powered (VersaPak), which is not as much of a downside as I at first expected. It has plenty of power for up to an hour of almost continuous use before needing a recharge. A plug-in model would be somewhat more convenient, since it would just work continuously for as long as needed, but I don't think it'd have more power.
I've found this tool to be indespensable for many tasks at the workbench. I've used it to cut ply rib templates, shape a stack of ribs, cut steel tangs for strap-on mufflers and clean out the wing cutout of a profile prior to replacing a broken wing. I'm looking forward to discovering many more uses for it. It allows me to do precision work quickly, which enhances my modeling experience. Normally I prefer hand tools, but this is one big exception. Don't think twice about getting one of these - it really is a must!
Tim
MAAC 65703