I'm about to go out and treat myself to a KitchenAid stand mixer. I was all set to buy the real super-duper one--525 watts, 6qt bowl. I happened to mention this to a chef friend who asked if I make large quantities of batter (more than one cake,let's say). I said no. She said she found that the 6 qt bowl doesn't handle small quantities well and she preferred her 4 qt bowl for making one cake at a time. Now I don't know what to buy. HELP from KitchenAid owners, please.