I mean for that price some solobarics in a high tuned ported box (35-40hz) would be pretty dam loud with 1200 watts.. Just get DVC 4 ohm ones and wire them together for a final of 1 ohm. Get a box designed correctly and they would hit hard. 12s would be coo. Other subs that I could think about are the RE audio SXs, IA LIs or DPs.