Since sreekers has been out of town, I currently possess the Paradox Evolution. I have over 10 miles on the Paradox Evolution with dry weight at 35lbs and 55lbs. The Evolution rides very comfortably. This next week I'll be kicking the weight up to see how well it does under heavier loads. So far it has been one of the most comfortable packs I've used. Sreekers is sitting on the other MR Metcalf, Kifaru Bikini/Highcamp, and the Stone Glacier Solo. We are working a review of these packs.