I've tried several, including what you have listed. Until you get the larger sizes... I truly don't see a difference except $$$$. When you get to the larger models, KitchenAid does rock. But for your standard 4-4.5 quart model, I went with Hamilton Beach. It was much easier on my purse (I could buy 3 for the price of 1 KA). It's made from the same construction materials and actually had more power than the same sized KitchenAid. But hey, If you an additional $200 to blow, go for the name.
BTW, if you're wanting the little lid thing that fits onto KA that keeps flour and such from flying everywhere, it fits the Hamilton Beach bowl perfectly. At least it does mine.