Don,
Durability is a primary concern. I don't want to be buying new panels every couple of years
. The rollable panels only carry 1-2 year warranties where the rigid panels carry 15-25 year warranties. Of course, I'd really like to hear what experience people had with these newer, flexible panels holding up. Do you remember what brand/model those panels were that you had trouble with? How long ago was this?
Thanks, Colin