Has anyone tried both of these side by side? Right now I'm looking into eventually getting an 18 for all my low end, and throw the mid and treble thru a 4x10. I've played other speakers by Ampeg and SWR, and I really like the "active" sound that SWR has in comparison to the classic Ampeg tone. I really want to know if this stays with the 18s. ANy info would be helpful.