It's not exactly an apples to apples comparison, but I own two DB112's (8 ohms each) and one DB212 (4 ohms)....it makes quite a stack with my DB750. If I was forced to choose between the two 112's or one 212, I'd probably take the one 212. Although the sound is pretty close, I think the 212 is a little fuller and has a little more punch.
On the other hand, for convenience sake, I like the portability of the two 112's. For me the sound is so close, if I had to make your decision, I'd go with the two 212's just because they'd be easier to haul. Of course, I'm 50 years old and when you get to be my age, portability does play an important role in the equation. To be honest, I don't think you'd be disappointed with either set up. I love my Aguilar rig.
