I've been reading this thread with interest. My KitchenAid, model KUDL02IRWHO, purchased in Feb. 2005, has never given my any problems. I'm quite happy with this dishwasher and hope it lasts for another 7 years but I appreciate the critiques given in this thread of the other brands in case I end up needing a new one in the near future. My KA is a mid-line model and does not have the scrub jets but usually cleans even burned on cheese off of my Corningware. Rarely do I have to hand scrub or rewash something. I use either Cascade or store brand detergent from HEB.
The owner's manual recommends using 120 degree water and the sanitizer cycle, which I always use, heats the water to 155.
Good luck with your new KA, Petek. I can't wait to hear a report on how it handles really dirty dishes.