I thought the Rambo air pad was soo bad I took it back to Robinsons and they gave me a refund. Tried it on my guy and he went nuts even before I tightened the girth. It looks like it's made in 2 dimensions IYSWIM, there is no curve along the spine, so it folds and creases, and these dig in, and it seemed to dig into the withers. When I looked at it on the horse, I was astounded at how poor the design was, and how Rambo are happy to market it to be honest!
Can't comment on the prolite, never used one.