Rating: 2 / 5
Owned it. Sold it.
My opinion: It was 'ok'.
It has quite a following though. All of my co-workers love it, except for my old boss. He loves his ProLite4.
Compared to the BMW Torsolite and the POE Uber-Lite self-inflaters, it is clearly second class.
It is NOT as robust, does NOT feel as robust, and compresses more when laying on it (resulting in a colder torso when laying on it) than both of them, plus it's heavier (well, it's also a bit larger too - even in the shorter length).
I did not feel that its performance was on par with the other two pads I mentioned.
I give it a two because it is not terrible and is useful. I'd probably give the other two pads somewhere between a 4 and 4.5.
At this point in time, in my experience, there is no 4.5-5.0 lightweight self-inflater. Perhaps an aerogel-type pad will change that? (one can always hope!)