I'm looking to complete my first rig. I have an Avatar SB112 as my only cabinet at the moment and would like to get another cabinet to take full advantage of my head's 300w. As it is, I seem to be getting good low response with this cabinet but sometimes I feel the single speaker can't handle all those low frequencies of my 5-string at high volumes (too much vibration). Overall, I'm very happy with it as a standalone for smaller gigs at moderate levels but for bigger gigs this won't cut it, especially now that my guitarist got a new 100w tube combo But I'm undecided as far as the second cabinet to go with this one. Because of money issues and weight issues (bad back) another Avatar cab is my first choice, but which one???? B210? another SB112? SB115? If I get the 210 will the extra speaker area give me more volume? If I get another 112 will I have the same awesome sound times 2? Will a 115 give me the low end that my SB112 doesn't seem to handle at higher volume without sounding too muddy, you know, all that low end.... I'll appreciate any help. Thanks!