this is something that's been at the back of my head for awhile, so i figured i'd get some good opinions on the matter. i bought the yamaha bbt500h right when it came out. in retrospect i could have probably done much better, but i must admit it has grown a bit on me. i used to plug into a 15' peavey cab my friend had, and it was shaking the house through the 4 ohm speaker. there are some very good workable tones, and since i play all styles of music it gives me good versatility. the question is what kind of cab should i begin considering for this thing? i'm looking for something sturdy enough to gig with. for my three piece band i'm looking for something that can give me some good low end definition, and some good growl (i like a thick bass tone, a la mike dirnt from greenday). we usually play in venues of about +100 people (with PAs). however, i am a bit strapped for cash (capped at about $400-500). i was considering selling the yamaha head and just buying a decent combo, but opted for the seperate head and cabinet. i could always upgrade one or the other in the future. i'm just looking for a good cab that can make the most out of a 2ohm head. i was thinking maybe a good 2x12 cabinet. i hear great things about avatar. i was also wondering about the yamaha's matching 4x10 cab, but i'm not sure. i just need something that could keep up with a marshall guitar stack and a somewhat avante garde drummer. i'm not obsessed with brand names and the like. if it sounds good, it'll work. thanks for any input and/or recommendations.