Powerful - Brunton SOLARIS 62 CIGS 62 WATT 12V Portable Foldable Solar Panel Battery Charger F-SOLARIS62

This thing is powerful-62 watts, high voltage. It folds very small (a bit larger and thicker than an ipad) but opens to the size of small sleeping mat. It is built with better quality than other panels I've seen.
If you want one of the most powerful foldables out there, this is the one. It put out 31 Volts (very high) with open circuit on a sunny day.
If you don't mind buying the solar controller to insure you don't damage your 12 volt battery (if that's what you're charging), I'd go with the Solaris62.
If you don't want to deal with the Solar Controller, maybe go with the Solaris26. Or you can fold up some of your 62 panel to reduce the output.
Very satisfied.
I hope the cost of foldables goes down as technology improves. Opticsplanet had the best price with the use of a coupon
Pros: Powerful/Quality Construction
Cons: Need Solar Controller

This review was written in the old system and had content requirements that are different than reviews written today.