6lb Nanofil and a 4lb fluorocarbon leader the Nanofil casts incredibly and I have sufficient strength should a really good fish jump on my hook the only time I've ever had a problem was fishing really extreme cold as the fluorocarbon can get brittle at that extreme but that's been the only incident and that happened at the low 20 degree range.
Fastfish
Fished seaguar tatsu in 4 lb test. Same line for 3 seasons and still havent had a breakoff
I usually go with Izor XXX in 4 lb test, but, Im gonna try some Silver Thread Trout Line in 3 lb test. Dont know if itll be any good, but Ill find out!
6# mono with 4# flouro leader.