After only 10 days, we are very happy with this oven combination.  Still haven't tried all of the features but was pleased with the convection oven when roasting a turkey breast and later 2 dozen cookies.  Nothing was burned or left under cooked.  
The only thing that isn't as good as our previous double  wall oven is the beeper to signal when preheating has reached the set temperature.  The sound level is so LOW that we have to stand right next to the oven in order to hear the beeping signal.  Why it only has 2 levels- Normal and Mute -  are questionable.  That Normal level is very difficult to hear and we have good hearing.  I noticed that on other GE ovens the beeper has 3 levels- low, medium, high.  Why doesn't this model have that, too?