I bought this about 6 weeks ago and love it so far. We did have a problem with the display board in the microwave / convection oven that we bought too, but GE replaced it within 2 weeks with no hassle.
We purchased a new home and were able to choose our upgrades accordingly. I was a bit concerned since our last oven, a high-end brand that performed well, was a bit fickle and often had to be calibrated to adjust the temperature. While my experience with this new oven is little, I have noticed that it consistently completes the baking time in accordance with the recipe. No more guess work or fear that a time-consuming cake recipe will be a flop!
Only had a few weeks so still haven't used all the features, but so far it's been great. The only issues I've seen so far is the timer button is very small in the corner. Other than that. It's functions properly.