Its a tough choice on the solar panel. Portable takes up valuable storage space, and you have to spend a little time setting it up and putting it away. However, you have the flexibility to move it around to keep it in the sun. Roof mounted panels are always out and always charging, if they are in the sun. So your batteries are being topped of while your rig is stored, on the road, etc. We needed more watts for our 450 AH battery bank, so ours are roof mounted. That's great, unless we park in the shade, but we also have a 2000w generator as backup. There are lots of installation threads on this site, which you can use for inspiration.
