Love these ropes, very light, and resist snarling better than other skinny ropes in my experience (they are still a pain in comparison to a fat rope, of course). Due to the lightness they're obviously not as durable as heavier ropes. Used for multipitch ice and rock.
My experience with these ropes have been less than positive. I have always climbed on two ropes and for 20 plus years, I used BEAL 8.5 mm, 50 m doubles. I bought these Phoenix (60m) couple years ago and I think next time I will go right back to BEAL. These ropes kink way too much and repeated attempts to fix the kinking go nowhere. Just 5 minutes at each rap station on significant multipitch rap can cause me an hour messing with the ropes. As you can tell I have been very unhappy with these.