I like tarred bankline (Catahoula brand especially) very well although I do sometimes have the cheaper mason's line. I like paracord better fore ridge line though because I like the way it works in conjunction with tarred bankline (a Catahoula Prussik knot holds very well in paracord, and my repertoire of knots could be better!
![blush blush](/images/graemlins/default/blush.gif)
). Definitely you can get 100' of bank line or mason's line in the space of 25' of paracord.