When our microwave/wall oven combo went out suddenly, we had to look for a new one quickly.  The old one was a GE and in order for the new one to fit, we had to go with another GE.  We questioned the microwave/convection oven combo and were worried about the circular control.  It was easily installed and after working with the microwave controls found it was very easy to use.  Having the microwave also act as a convection oven gives me the opportunity to have 2 ovens which I will enjoy. 
 The oven takes a little longer to preheat than I would like, but that's a minor issue.