Cosmetics and build quality wise, do you notice much of a difference? Notably areas such as the "tolex" itself, the handles and the backplate. I have yet to see the 2 side by side, but when I first saw the 112 in person it seemed to be nicer in fit and finish, nicer than the combo by a little bit, and what I remembered from seeing the 115 in stores. Then linnin posted that the 112/210 are made by eminence China as opposed to the Indonesia factory. It just seemed slightly less "cheap" (for years I had used 90's swr and eden cabs) than the 115 and my combo with the covering peeling off in the back.
I'm sure the differences are subtle, but let us know if you notice them side by side.
. I used 8ohm 410 with 8ohm 210 on top often with great results. Consider the only 3db difference but 4 speakers going, it works fine. I doubt you would need a 610 rig though, 2 oversized vertical/diagonal 210 boxes is pretty nice, not to mention the talkbass approved psycho acoustical coupling effect (whatever they say, it is only a quasi line array, true line arrays have other stuff going on, hence most have a curve and continuing linked waveguides)
