This GE wall oven replaced a 43-year-old GE unit that had served us well for a long time.  This new one has many more features than the old one.  I particularly like the way the oven indicates its temperature while preheating, so that one can check the progress.  I have not yet tried the convection setting or the temperature probe.  The only negative that I can think of is that when the control buttons go blank, sometimes it's difficult to get them to reappear.  One has to touch the area several times.  It appears to maintain a constant, accurate temperature.