I've had the FAFCO 4 x 20 panels for about 5 years which I've installed myself. They have developed too many leaks over the last season to bother with repairing. I want to replace them with 4 x 10 or 4 x 12 foot ones anyway, since I've never liked how the 20 foot long ones never lie flat.
Can anyone recommend a brand that seems to last? I don't mind using something with slightly less efficiency and am much more interested in longevity.