I rate my Sun Oven bought in late 2009 tops for baking potatoes and cooking rice. I have never had better baked potatoes. I live in Bangkok, Thailand, and most of the year it works wonderfully. The monsoon season, generally May to September, is a little more problematic, but even then I can often cooked rice in the oven before clouds cool it. Often I have baked brownies and sometimes cookies in the Sun Oven and they come out very well, although I have to be careful the clouds don’t become overcast.