I've soo been wanting a pair of TREO Engineering SSI 12.44's, but I'm also consittering a set of Orion H2 12.4's. Both are DVC subs, either choice will be wired for 1 ohm. Both can be used in a sealed box. The SSI 12.44's are roughly $350.00 each and the H2 12.4's are around $250.00 each. I know how the SSI 12.44's sound, but haven't heard the H2 12.4's yet. I've had a set of the original Orion Xtreme's years ago, and liked them. I don't know, what do y'all think ??