What Line For Crankbaits?

I prefer flouro for the simple fact that it's more sensitive than mono.  Both stretch to some extent.  Line diameter has more of an effect of running depth than the floating/sinking properties.  Visibility is the same with both and I'm not convinced it even makes a difference anyway.  

Plenty of people use mono with success, but I find that the extra sensitivity helps me detect more strikes and feel cover/bottom better...Believe it or not, there can be some very subtle crankbait hits.

10 lb for anything I want to get depth out of, 12 lb or 15 lb for banging around cover.