I’ve had one for many years (10+), but hadn’t commented earlier because I thought maybe my info was out of date. I still like it. The timer broke a few years ago, which I suppose is a safety issue.
All these years I’ve thought I was cooking quite good pizza in it, but @Taiwan_Luthiers tells me that’s impossible and I’m wrong. Oh well.
I use a Lodge cast-iron reversible grill-griddle as a pizza stone (I think @Dragonbones suggested this), to make two individual pizzas, which works well for vegetarian wife and carnivore me. With that griddle preheated, the pizzas cook in about 12 minutes - that’s with an oven temp of around 240-250C. I’ve made loaves of bread in it too, but I’m lazy and mostly use a bread machine for that.
I’ve also done plenty of other basic baking and casseroles in it. If one rack is out, and the other rack is resting on the bottom, my Dutch oven also fits in it, so I’ve done that a fair bit. If I were buying a new countertop oven here, whether or not the Dutch oven fits would be one of the main things I’d check.
A friend’s roasted a chicken in one of these, and the results on the table were fantastic, but the clean-up afterwards less so.
My biggest issue for usual cooking is that the “broiling” option doesn’t do much. Well, there is no broiling option, you just turn the top grill to maximum. Those 2-3 minutes to brown the cheese or the chicken wings out of the slow cooker or whatever often take quite a bit longer. If ever. I keep meaning to take out the upper splatter screen and see if that helps, but I always remember at inopportune times when there’s nowhere to put a red-hot splatter screen/grate.
Other minor caveats: it’s in the same plug as the microwave, and I need to turn on ONLY the microwave or oven, not both at the same time; and it may not quite fit the proper pizza stones you can find at Crate & Barrel (the measurements are very close). Oh, and we wound up getting a kitchen cabinet custom-made to fit it, I believe because the Ikea options weren’t the right size.