60's + sub for me. I have an integrated amp, so I use the sub's low pass crossover of 50Hz, thus the 60's are running full range and the sub pops in when it's called upon. If I had something like the Outlaw ICBM I'd probably cross at 60Hz.

Axiom M60ti Hsu VTF-2 Mk2 NAD C320BEE NAD C542 Systemdek IIX Cables by Unity Audio