Product review (1 stars): What a disappointment
I purposely selected these ovens because I wanted even heat for baking.  After about 1 1/2 years of use, and MANY service calls, I am working with it, and here is how:  When I want to bake anything where even temperature is necessary, I must preheat it for ONE HOUR!  Anything less and the wild fluctuations in temperature around the set temp will interfere with baking.  I had many baking failures before figuring this out with a GE repairman.  When you turn the oven on to 350F, for example, the tone will indicate that it is at that temperature when it is about 290F.  Then it cycles between 290 and about 400, with long periods at temperatures that are not even close (e.g. 310 or 390).  After about an hour the range of temperatures is down to about 20 degrees on either side of the set temperature, which allows for even baking.  I have also added baking stones to the bottom racks, which helps stabilize the heat, but subtracts one rack from baking.  According to the various repairmen I have had look at the thing, ALL of the new ovens from the American makers are made in China and are pretty much the same.  When I have finally had it with this one (and gotten over what we paid for it), I will be researching the German ovens.