I'm a trout guy only not that I won't give the vex a workout on craps and Whitey Bulgers when waiting for flags, but I use 6lb. Flouro for Brookies, Browns, Rainbows, and lakers. I have situations with finicky trout where I'll drop down to 4lb or days on lakers where I'll up it to 8lb but all around overall I use 6 for everything with no issues.