Leaderboard

The Rev 1 is 9 feet across, whereas the 1.5 is approx 7 1/2 feet. So size is a major difference. Perhaps sail material as well, as chances are the sail may be ripstop nylon (although there may be icky versions in later years, I don't know). Nylon gets soft with flying time. Not necessarily a bad thing. Slower kite, perhaps a little less agile although tuned and in good hands and the right wind it can still zip. As Bunduki says, it pulls like a tractor comparatively. I think the first one I flew was on 150# lines, unlike the more common 90/100# for the 1.5 versions I am familiar with. I am not a quad expert by any means but I do love my Rev 1 very much and I would be all over such a kite as you describe in your circumstances if the price was reasonable commensurate with condition. Exciting find, IMO. .