I give the Sun Oven 7 out of 10 acorns. I've used mine nearly every other day for over 4 years and for the amount of money this thing cost, it's beginning to fall apart. I emailed them wondering if they refurbished their units and received no response. But first off, let me say I love it! Especially in summer, I always sing about how I LUV MY SUN OVEN! In summer, I've made three-course meals in it and that's without doubling up on the pots! Even during the winter, with clear skies and careful management, I can cook up a pot of beans in the shorter days. I have used it when temperatures only reach into the 20's Fahrenheit. I've often wished they would manufacture one for the upper northern hemisphere, built with a steeper but less-precarious-for-cooking angle for winter use. I have just begun using it for dehydrating, which is easier in the winter. It's a challenge to keep the temperatures from rising too high but I just had a thought - I wonder if covering up the bottom reflector might help keep temperature down a little easier. It's true that the adjusting leg is a little difficult to use and the oven is definitely heavy to move around, especially if you cheat by not taking out your food - a back breaker!
When the stove finally craps the bed I will buy another. That said, the brackets holding the door hinges are made of aluminum and are experiencing metal fatigue and are no longer holding the glass in place; steel would have been a better choice. The heavy window glass is only attached to the wooden framing that tops the unit and over the years, the screws holding the glass have stripped out of the wood and you need some creativity to reattach them and it's not going to be a long-lasting the solution. You can't attach bolts and nuts because you can't access the area for the nuts - it's inside the oven walls. My advice to Sun Oven is forget the wood and use longer lasting material for the framing. The wood looks lovely but it's not practical. I use a bucket of rocks to hold it in place, especially important when the angle is steeply tilted in the winter. It has held up to some pretty stiff breezes. It's true that it will set things on fire! We use shade cloths over our south-facing windows in September and October and it has melted holes in them! But like I said, I'll buy it all over again!
