The other concern about microwaves, which is my main concern, is the whole chemicals from plastics issue. It's controvercial, and I was never concerned until I had my lo. (In fact, I still warm leftovers in "microwwave safe" tupperware at work for myself - though less and less). The issue is that when plastics are warmed in the microwave, the chemicals from the plastics can leach into the food. Because manufacturers sell "microwave safe" plastic containers, the FDA has approved them -- but this just means that what they consider a "safe" amount of chemicals in the food is okay. It's kinda like how we're allowed to pollute the waterways to a point. Your allowed a certain amount of fecal coliform in the streams, for example -- but I don't want ANY in there. Anyway, don't mean to start up a debate -- but wanted to share my concern. I have not done much research on this at all....