So expense is only one aspect of the flexible panels!
Unless they have improved considerably they don't have my vote!
Why you ask? Because people know I try to fix things, so donate to my efforts to lower toxic landfill fill!
I have had many flexible panels find their way to my camp. I had no luck with repair of them, so quit accepting them!!! For the record, Noone has brought a house panel over to see if I could do anything with it!!!