One Burly Beast
I've put 18 days in on my Flash so far, and have beat up on it trad and sport at the Red and the New. After many falls, plenty of dirt despite working out of a rope bag, and the usual topping and hanging it's dirty, but hardly fuzzed at all. It handles better now than out of the box, though it was great then. This is my workhorse and I expect to get another season or two out of it easy. I have another manufacturer's 10.3 with a 'Mammut-like' thick sheath. It's a sweet cord and a bit lighter, but though I've got only 5 days on it with the same sort of use and a couple falls, one end is already more fuzzed. You want a rope to use hard and keep on ticking, go Mammut.