I studied over a dozen possible combinations for a convection oven and combination microwave/convection oven for my kitchen and chose this combination unit for the wide range of features and ease of use. I've had it only a day, so my experience on performance is limited but so far quite positive. I will agree with other reviewers that the timer's chime is too low-pitched (so what?--I use a timer app on my phone anyway for when I'm in another room.) and that the pre-heat time is longer than my old thermal oven. The latter is probably due to the sealed bottom heating element and is a price I'm more than willing to pay in terms of ease of clean-up later. Another feature I've not seen mentioned is that the exterior of the thermal oven is cool to the touch even when heated to baking temperatures--a major plus in hot climates. While looks were not a factor in my choice, I have to say this looks terrific.