IME, the issue w/MMGs and subs is optimizing the integration of the subs and the panels. It's tricky and IMHO depends on the getting x-over done properly as much as choosing the particular sub.
If you have an Audyssey (or equivalent) equipped pre-pro, you're golden, and you have a wide array of subwoofer choices that would, I suspect, work pretty well. If you do not, you might look at the Velodyne DD subs, which include their own integration software. It's a PITA (because the auto set-up sucks and it consequently requires endless manual tweaking for best results), but...if you're willing to spend the time to get it right... it works well.
Good Luck
Marty
If you have an Audyssey (or equivalent) equipped pre-pro, you're golden, and you have a wide array of subwoofer choices that would, I suspect, work pretty well. If you do not, you might look at the Velodyne DD subs, which include their own integration software. It's a PITA (because the auto set-up sucks and it consequently requires endless manual tweaking for best results), but...if you're willing to spend the time to get it right... it works well.
Good Luck
Marty