I started my solar cooking adventure making a box oven design I found on the internet. I bought black pots and everything but when it was all said and done it was pretty much useless. I also made something using a car windshield blocker, covered it with foil and it was useless as well. You need insulation, you have to get the cook vessel hot and you have to hold the heat in. That said the more I see of the commercial units the more possibilities I see for actually making something that works.
But out of frustration I broke down and spent to much money on a commercial alternative. Yes they do work well but the construction is a bit flimsy for the money am I sorry I spent the money, no they work. Was it overpriced? Yeah I think so but I could say the same for a lot of things.
Currently I have a GoSun Sport and the Fusion. If I could rush right out and buy another solar oven it would be the Sun Oven.
They all have their strong points and weak points I wish I could buy them all and get to the bottom of it.
But I have what I have.
I sure would like to add a Sun Oven.
I also have a propane stove and wok, I keep plenty of propane bottles on hand so frying and boiling water is not a problem.
Between the wok and solar cookers all I need is grocery's, the rest is easy.
It is empowering to know that I can cook just about anything with only the sun!
But on a cloudy day I got the wok.