Classic
The Classic with it's 4 1/2 bowl is the smallest and quietest in the Kitchenaid stable. It will perform any task you ever want to perform if you know how to finese it's limits. Perfect for a household that mixes single recipes batches and an occasionaly simple bread dough.
The Ultra is the 50 watts stronger with a 4 1/2 quart bowl. It clicks slightly in heavy dough and is a touch more loud than the Classic.
The Artisan is a 5 quart model although the body size is no larger nor are the attachments. You just have another 1/2 quart of dough to sit above the paddle. The bowl is also closer to the mixer head exacerbating the ingredient adding. The motor is notable louder than the Classic, has the clicking of the Ultra and a growling undertone. It is good for double batches and has more torque for heavy icings. It has a plastic worm gear that strips in an instant if you press to hard on the shredder attachment or grinder.
The 5qt HD has morphed in the latest incarnation as the bowl lift line up all share the newer motor. It also has the spiral dough hook which is much more aggressive. The bowl is still the deep and narrow and it still leaves the unmixed bits.
The Pro5 has the wider bowl which makes it possible to add ingredients without showering the mixer. Mixes more evenly and whip faster without splattering.
The Pr600 is the largest. For a while the bowl lifts had an internal thermal protector which shut down the mixer before stripping gears, but required a trip to the KA hospital. You see the hew and cry raised on many sites about how the mixer failed under a load. The latest has a thermal reset which starts the mixer after a cool down. The bowl lift models as well as the discontinued 5qt Accolade have a shrill motor, with a soft start feature that will make your ears bleed after extended usage.
5qt on the left, Pro6 on the right
Kelly
