The mixer is dead...

The hand mixer I've had for years just died while I was trying to make cookie dough with it. Unfortunately, there doesn't seem to be any way to open it up and see if I can repair it, so I'm probably going to have to toss it and get a new machine.

Anyone have suggestion for a brand/model to get? I tend to use it for heavier mixing tasks, like cookie dough, or the early stages of bread and whipping egg whites (which is beyond tedious by hand).