I've been using, for over five years, a Zamp suitcase 160 watt solar panel. There was nothing wrong with its performance, but with the passage of time my performance in hefting it around diminished. So, I decided to take advantage of the advances in technology, including lighter weight with increased power, and have found this purchase to put a smile on my face everytime I take it out of the truck bed, set it up, and reposition it to follow the sun's movement across the sky. As it is that no one...