RandomWoodsman
ArboristSite Lurker
My personal line is Poison Hi-vy which is 24 strand and like alot of guys on here have said is an excellent rope and I highly recommend it, however it is a bit pricy. My short line at work is blue streak which is more affordable and a good working line that will most definitely do everything that you will need it to do and isnt a line that will really limit you too much as you get better climbing. it will support pretty much every style of DbRt dont know too much about single rope but I'm sure it would work ok.
Hope this helps,
Random
Hope this helps,
Random