As Am_Fear_Liath_Mor said as well, if you have the room I would recommend a folding type, the more watts the better. I got my 40 watt from vitabon off of e-bay Click here and his military style panels are rugged and good. I am still looking for a small one like Izzy has but has a built in charger for AA and AAA that is small and compact. I haven't found anything that will do what I need it to do. The military one is awesome but consumes weight and space. It's worth it to have one and when the prices drop down again I may buy another for a spare. The 40 watt will run all my equipment I use without batteries and charges everything fast sun or clouds.