Supple, Durable, and Attractive
I bought fifteen of these last season for creating extendable draws. I pared them with BD's FreeWire quickdraws. I removed the dogbones between the draws and combined each pair of biners with a sling (to create an extendable draw, clip a carabiner to each end of the sling, then pass one of the carabiners through the other and clip any two strands. To extend the draw, unclip any two strands from either carabiner, and voila! Reduced rope drag.) I have all of the dogbones saved in a bag, and when I go sport climbing, I take apart all of my extendable draws and put the carabiners back onto the dogbones. It's a time consuming process, but it's a heck of a lot cheaper than owning both a set of extendable draws for trad climbing and a set of sport draws for sport climbing. Extendable draws are a far superior option to quickdraws for trad climbing in my opinion, especially since they can be taken apart and used to equalize trad anchors or slung directly around natural features in the rock.
I have had no problems with the quality of the nylon runners. After a season of use, they are all still in excellent shape; enough for me to trust my life to any one of them, which I do regularly. Dyneema would obviously be lighter and smoother, but it's also more expensive, and I've found these to be the softest and most supple nylon slings I've used, which is good in an extendable draw. I have the full assortment of colors, though I don't use them to color coordinate with my cams or anything fancy like that, as I've known some people to. They just look pretty hanging from my harness. I recommend these durable and affordable slings.