I have a Mark Bass head. I've been using a Markbass 2X10 and it sounds fine, but it just doesn't have the bottom I want. I play a P-bass or a Rick 4001 through it. I'm not a "bass player" but I do play bass, and my bands rehearse at my house, so I'm looking to upgrade to a bit more bottom for our community bass amp. I'm not sure I want a 4X10 unless it's fairly light. I might be interested in a 1X15 or a 2X12. Would like to keep it fairly light. What would you recommend in 1X15, 2X12 or a light be good sounding 4X10? Thanks Probably looking to spend around $600 and not opposed to buying used.