I would forget the ML subs. They are not bad generally, but they are a bit overpriced when compared to dedicated sub manufacturers. The Hsus are good, and there is a good discount on the current VTF3 mk4 and VTF15h, however they are being replaced in a couple months by the next iterations of those subs, the VTF3 mk5 and VTF15h mk2, which look to have a big performance increase, especially in the case of the VTF3, where the mk5 looks to nearly double the performance of the mk4. There might be further price drops on the current VTF3 and VTF15h in the meantime, as they will no doubt want to clearance them out for the new versions. Another thing, with a 1200 budget, you might also think about dual Hsu VTF2 mk4s or dual Rythmik LV12rs. I would also take a close look at the Reaction Audio PV15X.