Our new Frigidaire replaced a 35-year-old microwave/oven combo and the difference in technology is night and day. Clean look, so easy to use, and I'm still learning what all it can do. We especially love the sliding oven tray which is so smooth and makes me wonder why I haven't seen it in an oven before. 
I installed it a month ago and, being a life-long DIY'er, I'm still stunned at how easy the install was.