I have had it two months.  It did a big Thanksgiving and Christmas dinner.  Lots of baking too.  I have to watch the time as it  cooks faster than my old one.  My old ones were 20 years old.  The only thing I hate are the shelves-they do not fit as tightly as my old model. The trade-off is having separate timers for each oven-which is super.  Another thing to get used to was the chimes to indicate when things were finished.  Yes,they are not as loud,but they do ding when you are almost done-1 minute before-which is a nice feature.  So its about even with my old one interms of good/bad features.
Others talked about it being hard to install.  We had a store do it and they had issues as it had to be raised higher than our old set. But they did it pretty quickly-it took experienced people.  Hope this helps.