I got a SWR Goliath III 4x10. The poweramp is a Carvin DCM2000 w/ a SWR IOD. Do you think the 15" Son of Bertha would be a decent low end, or a 18" Big Ben? Another Goliath maybe? I do slap bass alot, and heavy rock music, and contemporary funk rock stuff (Incubus). And how should this be plugged, stereo or mono, or what? Thanks, lots of questions, and so little time!!!