My 14 year old Sub Zero is dying. The same for my Thermador range. My dishwasher's going too. The Sub Zero I've been largely happy with, but the back ices up (a known problem). I have not always been good about vacuuming motor, so that has probably affected it too. The Thermador I've been less happy with as the grill section is just awful to clean. I've found that dealers won't give you a price concession, but they'll give you a rebate or a free dishwasher if you purchase multiple items. What are your thoughts and recommendations? Thanks so much!