Obvious one from me but have a look at the Nash Fluro link. The 15 would be fine but if you wanted that extra but of stiffness (the fluro link is quite supple) the 20lb is a great all rounder.
I actually avoid carp tax fluorocarbon hooklink material, mine is Spiderwire in 15lb, but I don't do much snaggy water fishing. It does go through the eye three times on my Gardner Muggas for D-rigs.