Sorry for the confusion, I was comparing my panels. My trailer has the flex, cruiser has the 100 watt fixed. The 120 watt fixed was one I used with my M-100 and the folding was what I had to get when I went on forest trips.
What I so horribly failed at trying to say was, I get better output from my fixed panels even though their clunky and big. This is due to the lack of airflow under my flex panel.
If I would have gotten my folding years ago, i would only have the fixed on my cruiser. It keeps my batteries up while its parked in the driveway.
As for power needed, my 120 watt was more then enough to run my 50qt fridge and keep my battery charged. When I put the flex panel on my new trailer, I went with more output then needed because of the heat loss.