Personally, I'd go with an MMG/subwoofer combo. Whatever the cost to the "purist" audiophile approach may be, the extended, smooth bass of the subs and the placement flexibility of the smaller Maggies is likely -IMHO- to more than justify it.
The trick, of course, is getting proper integration. I use the Velodyne SMS-1 Digital Room Correction unit (DRC to the subs, only!) for precise control of level matching and all other crossover variables. It's a PITA to set up, but works like a charm. I also use an NHT x-2 active x-over, ahead of the SMS in order to keep the Velo unit out of the main signal path. More complex than most audiophiles prefer, but very, very effective.
Good luck.
Marty
The trick, of course, is getting proper integration. I use the Velodyne SMS-1 Digital Room Correction unit (DRC to the subs, only!) for precise control of level matching and all other crossover variables. It's a PITA to set up, but works like a charm. I also use an NHT x-2 active x-over, ahead of the SMS in order to keep the Velo unit out of the main signal path. More complex than most audiophiles prefer, but very, very effective.
Good luck.
Marty