At the moment I have a Mesa/Boogie 4x10 (I think it's a Diesel) and an AMP-420, which is like the predecessor to Thunderfunk. I play in a four piece math rock/experimental project. Whenever we practice, I feel like I'm drowned out by the two guitarists. I also feel that I could do better in getting more bass frequencies. So if you were in my position, what would you do? Right now I'm thinking about adding a 1x15 or even a 2x15. However, Mesa/Boogie stuff can get expensive. All suggestions welcomed. I'd like to try and keep it below $400, and would like 8 ohms. Other than that, nothing ridiculous heavy, but even though I could put casters on it or something.