OK. So I've been playing an SVT3-Pro through an Avatar B212 for around... 4 months now. While I love the tone, I'm looking for more punch. I'm playing 6 string fretted and 4 string fretless basses at the moment, so I gotta have low B support. I've never actually played through a combo of 10's and 15's, only through a 4x10" Ampeg (which had sweet punch, but lacked B string balls) and some random 15's, which generally lacked definition, which I need. My tone is very midrange'centric. I have the mids cranked on the head, with a generous bump in the low-low mids on the graphic. I like a big low-end, but I want definition. I find my B is a bit muddy on the 2x12", and I've tried EQ'ing it out. And yes, I've thought of just adding a 2x10" for the punch, but I'm already running a 4 ohm cab. I thought it'd be all I needed, what can I say. I kinda wanted to stick with one cab, for size and portability issues (senior in High School, going onto college eventually), but I don't know if I can do that now. If I went 10's + 15, it'd be all Avatar. I like the tone, so don't bash. Also, this hints at my budget. I'm not looking for uber-boutique Bergantino and such. What other cabs would you suggest I look at that would combine various speakers sizes and give me the definition and bottom I'm looking for?