So I've been looking into purchasing a new rope, preferably in the 9mm thickness range and about 600ft in length. So far, I've narrowed my search down to the: Blue Water 9.2mm Canyon Rope Blue Water 9mm Canyonator Imlay Canyonero 9.2mm I will be doing all of my canyoneering in Hawaii (which means a lot of sharp lava rock). I would go with the C-IV, but the premium price is a bit out of range (college student problems I guess). If anyone has experience with any of these ropes, I would like to hear any opinions on them. Or any good comparison between these ropes to help me get some extra info on them before I blast away the money.