I am in the market to buy a KitchenAid standing mixer, but am unsure
whether I should go for the 5qt (450watts) professional model or the
6qt (525 or the newer 575 watt) professional model. I generally do not
make too many cookies, but I do a lot of yeast breads and doughs --not
in large quantities, but frequently enough dough for 2-3 loaves at a
time.

Any suggestions would be greatly appreciated.