I have a GK 800RB and a GK 1x15 RBH. I love the rig but I'm not getting the bottom and the warmth I want. I seem to be getting more mids and highs and not much bottom. I want to try swapping out the amp or the cab. my buddy works at a guitar store and he lets me try stuff out. last time i was there i saw some bag end, B (????), and agular cabs,some ashdown, agular, GK, and a few other heads. what else? Any ideas of what to try at the store and elswhere?