I have a 5-quart 350-watt, a lesser-wattage 5-quart picked up at a flea market, and a smaller very, very old tilt-head from the 40's, I believe.
What do you want to do with your mixer? If you've never used a planetary mixer before, the greatest advantage is it takes less time to mix anything as compared to one of the Sunbeam types, so you can actually overmix things if you're not careful. I can't imagine trying to make a good decorator icing in a less powerful mixer.
Kitchenaids used to be made by Hobart, but the company was taken over by Whirlpool several years ago. They went through a period when there were some lemons because of the changes -- they just broke down. Some of the Artisans have a bad reputation.
I prefer the bowl-lift models. If I could do anything different, I'd like more room, a larger bowl.
I received a meat grinder attachment for Christmas and it's been a disappointment. I was grinding venison, and several times I had to take it apart and pull and scrape the fat which had wound around the "knife." The only other attachment I have is the vegetable slicer and I mainly use it for grating cheese. The older all-metal attachments, which are going for high prices on
Ebay these days, supposedly had better knives.
I was just reading reviews on this Swiss mixer last night, and I'd consider it if I was starting from scratch. An 8-quart mixer would be great.
http://www.amazon.com/Electrolux-DX...DWAD/ref=sr_1_3?ie=UTF8&qid=1230511961&sr=8-3
The Kitchenaid forum here has a wealth of information:
http://forum.kitchenaid.com/forums/default.asp
There is an actual Hobart mixer available which has the same hub size (where the attachments fit) as the Kitchenaid. If you want a tank of a mixer, for which you might have to take out a small loan, but will never have to replace:
http://www4.shopping.com/xPO-Hobart-N50