Timer sound so low even on high setting you would not be able to hear it in another room.  Lower oven very good with even heat and surface cleans up easily with damp cloth.
Microwave requires a number of steps to do a simple timed operation.   Unsure about the "cooling" cycle and could not find information to understand if opening the door before that cooling cycle ends is detrimental.   
Basically a very nice combo unit with these few issues mentioned.