We received this as a Christmas gift and I have to say that so far, I'm quite impressed. It's not the world's biggest mixer, but unless you are very serious about your baking, it's more than big enough to handle most jobs. It's small size and sleek design means that it actually looks pretty good out of the counter where it doesn't take up too much space. That saves a lot of hefting it in and out between uses.
As for it's operation, it's quite quiet yet appears to be reasonably powerful. We haven't tried really heavy doughs in it yet, but it whipped through basic cookie and cake mixes well enough. It comes with a heavy mixer, a wire mixer, and a dough mixer. These attachments are not dishwasher safe, so they have to be washed by hand, which is perhaps the only drawback I can think of. The bowl is stainless steel so it's good to go.
Even though mine was a gift, seeing the price on Amazon now, the price for value on this unit is pretty hard to beat. I certainly wouldn't expect a good looking, hard working, high-quality KitchenAid for this price, so if you're looking for a solid medium-duty mixer for the kitchen, I can recommend this mixer strongly.