I think I'm on the search for some new cabs. I like my Hartke Hydrive stack for my metal band, but when I'm so afraid to run my pedal board through it at loud volumes. With some effects, the speakers look like they're ready to explode. It seems like the sealed cabinet doesn't project the deep lows as much as I'd like. Yes, I've tried to search but couldn't come up with anything closely relating to my needs. I guess I'm looking for a ported cab with deep lows. I'm going to be running an octave pedal a lot of the time. The FM4 puts out pretty heavy sounds as far as low frequencies go as well. I'm thinking maybe Avatar as I've read they go pretty deep. Should I even stick with 10's or should i go bigger? I'm trying to stick to cabs under $800. So that excludes the 21" Accugroove El Whappo Grande that's for sale in the classifieds right now. (GAS) Maybe i should look at full on P.A. rigs? And... am I right in thinking that sealed cabs aren't quite the best for this application? I do believe I've read numerous times that the lower frequencies start to roll off at a sharper curve in sealed boxes.