I've sold the 7.2's for some time. They are very refined sounding, and all a lot of casual music listerners would likely ever need I think. With some great gear to accompany them, they will do wonders with vocal, insturmentals, light pop/rock/acoustic, orchestral, jazz, etc. On the other hand, if I was a hard rock junkie(of which I partly am), I would steer elsewhere. These speakers, even with a monster amp(Pass X1000's/Krell FPB's/Levinson 333's/Boulder's "chunkies",etc), they won't smack you in the chest or slam you the way other more nimble speakers out there will I feel. I find even the much cheeper NHT 3.3's and PSB Gold's had more snap and punch down low in a passive speaker. Of course, these speakers aren't as refined as the 7.2 in any other area's. Beyond this, you go to more efficient alternative systmes, or active speaker designs for Rock afficienado's, I think.
Besides this, the 7.2's are definitely a more complete speaker than the likes of the 3.6's. The 6's are closer to what the 7.2's can do. You'll get a better speaker in short.