I first received a lemon...a "Franken-oven" as named by a GE associate.  It had incorrect software installed and some incorrect parts.  It took 5 months to convince GE and the local store that a replacement oven was necessary.  So I went through the holidays without a reliable oven.  After finally receiving a replacement oven, I found all of the features work as described.  (Although I haven't yet tried the cleaning setting.). I found the fan to be very quiet.  I love the convection option and use it almost daily.  The alert sounds (timer, pre-heat complete, etc) is too quiet.  Even on the loudest setting, it is quiet.  The glass shows fingerprints easily.  There is a perfect combination of features for my use. It is an attractive oven in my kitchen.