It must be me. I am truly amazed, and disappointed. I just got a KA 5 plus pro, the 5-quart stand mixer with 475 watts. I've used it about 5 times so far. It certainly **does not** cream. I put in one stick of butter and one cup of sugar, and I get a lumpy mess, even if I scrape the sides. Or when I put in 1 8 oz pkg cream cheese and some milk, same thing, lumpy, uneven, no matter what I do. When I add eggs, they kind of sit on the top and don't get incorporated into the butter or cream cheese mixture. I tried using the mixing thing, then the wire wisk (which is supposed to be for whipped cream and egg whites). I played with the screw to move the bowl up and down. It doesn't even mix well when I add more ingredients like flour. It's certainly powerful, but the stuff goes from unmixed to overworked in a second. I give up when my ingredients are mixed but not smooth.
OK, I know I am missing something. This machine is supposed to have 4-on-the-floor and air conditioning. Is it that I'm just working with too small a quantity of ingredients for that type of mixer?