I just bought a digital speed control Dremel totary tool set that was on clearance at Lowes, for $89 if I remember correctly. Apparently the digital speed display was not received well by the DIYers, but I love it.

Don't bother with the cordless ones, unless you plan on buying a second battery pac to totate and a fast charger. I have a mini Dremel cordless and there is nothing more frustrating than the battery running out of juice right before you finish a job.