I had some front-end issues that GE was very good about resolving for me, and I give them credit for doing so.  As for the oven itself, it is an overall very slick package.  It takes a bit to get used to all the functionality along with the rotating dial interface, but is a HUGE improvement over the 2013 GE Profile Combo Microwave/Convention oven in my home it replaces.  The new model is completely all-new, different, and much better.  The 2013 only had an ordinary plastic lined micro while the new one is all SST with the far-superior three-tiered Advantium cooking.  There is no comparison between the two.  The new oven has a much more sophisticated and robust shelving system.  And as saidd previously, the dial interface is pretty cool and highly functional.  It took a bit to get past my aforementioned problems, but because GE was so supportive, I am keeping this a 5-star rating.