I just picked up a used set of m80's for $560. I had 3 pairs of huge 12" three way speakers just on the front two channels plus surunds etc.. and my wife told me to get something smaller lol. I have a pioneer 9140 amp and a sansui au317. I am using the sansui to power the fronts via pre outs. I love the tubelike sansui sound but now I may need a bigger amp for the m80's. I was thinking about getting a large center channel speaker and some small b and w surrounds. I should mention I blew every other speaker I had. I like to listen to music at fairly high volumes but I like to have large speakers on the fronts to get directional bass instead of using a sub. I listen to music in stereo and movies in 7.0.