Product review (2 stars): Nice features, but not reliable
I love all the features this oven has, but mine has died, and the part alone costs almost $400.  Just remember one thing: Never, ever, ever use the self-clean feature.  If you use it twice, you have a good chance of breaking it.  The front display may go out (the control board).  There is a class-action lawsuit against Kitchenaid (Wolfson v. Whirlpool, 2011, NY Eastern District Court), as they knowingly sold these defective ovens.  The "self-clean" feature should be aptly renamed "self-destruct".
I've only used the self-clean once that I know of, but the display and buttons died on mine at about 6 years old (just out of the extended warranty).