The upgrade to the 370 is pretty much a must, Im my opinion, then you get the same tweeter and drivers as the mon7s, I have that exact system and the 370 is amazing, definately worth the extra $$$. As for the rears, right now i am using the titans and they do the job, hoping to save up for the adp370s sometime soon, but i don't think mounting a rear ported speaker is a very good idea, like others have said, so maybe wait or try the cinema adps and see what they are like.