I think the MMG's tend to sound a bit constricted and bright. I own them and like them a lot. I have mine mounted about 24" high on top of a couple homemade woofer boxes (using NHT1259 woofers, one per MMG). I use an electronic crossover ($500 from Madisound) and an amplifier for the MMG's, and an amp for the NHT woofers. Good sound for the money.
I was not impressed with the MMG until I heard them hung up in the air and crossed over to a good woofer. Wow, good value. In fact, to get better sound, I have to spend gobs more money. I'd enjoy checking into some horn speakers, but with the bewildering array of compression drivers and actual horns, as well as more crossover points...it gets to be work, not a hobby. The MMG/NHT1259 was easy!