I got mine in the 40m length. Perfect length for PNW alpine climbs. I can't seem to run out 50m or more without serious rope drag and 30m was just to much work setting up belays. Dual use - I use a pair as twins for steep climbing. On glaciers or simpler snow climbs I bring one for crevasse travel and rescue. Super light! Two 40m ropes weigh in at 8.3 lbs. Good dry coating, feels good in the hand(not insanely skinny), and good color selection. After a season of use they have barely worn - despite being dragged over snow, rock and ice. Good times!