Something else I just noticed. 4wdss and sunyee blankets are double rowed. This means you can never free stand them. The companion, roman and the projecta are single row. Although this makes them far longer, you can free stand them instead of having to hang them or lay flat on the ground/vehicle. May not be an issue for some, but just putting it out there.
Also: TAKE NOTE
Make sure you put some insulating material between the panels when folding up. My expensive projecta has been damaged due to vibration which rubbed the plastic sheet into area's of opaqueness, thus limiting the suns penetration to the cells. I used sheets of moving blanket I had on hand here at home, but the damage is done now.