I'm currently using an Ampeg SVT Pro II with an SWR Son of Bertha (115). I play a lot of blues, and moderately low volume stuff, so I figured the 15 would be a good choice. I thought that when I needed it, I could add either a 210 or a 410. But, now I'm feeling like I could use a little more definition in my sound. I'm considering replacing my SWR with a 212. That way I could have more punch, and I wouldn't even need another cabinet. I still like the bass response of the 15, so I'm not considering using 10s. It seems like 12s would be a nice compromise. Some of those 212 cabs are rated to take 600 watts, which would give me way more headroom than I have now. (My amp is 300 watts). I was just wondering what everyone thinks of this idea, and what 212 cabinets I should look at (hearing good things about Aguilar.) Thanks.