Thanks for the responses, it appears that replacements are always a crapshoot, but I think we will try the Kitchenaid. We like the steam clean features (no more scrubbing exploded food off the stainless steel interior) and the performance looks better than most. Kitchenaid is mostly an upbranded Whirlpool and a bit more expensive, but they seem to be well regarded if not well represented. Our current GE Advantium has soldiered on since 2002 but the new units don't seem to offer any more useable features to me, I'm a time and temp/power guy and the preprogramed times never seem to work well. Replacement seems straight forward, as is the venting. We may swing past Tucson and have Fred punch a hole in the coach for outside venting this fall. This part of the RV adventure is just one of those things...