I was in the same shoes. my room is smaller , 12x14. Since i listen to music more often than watching movie (70/30), i opt for M60Ti. I don't want to keep upgrading later on. The problem is i have to move speakers around (47 lbs each) to get the good sound image. I eventually will get a sub ( i think i go for HSU STF-2 ). As most people here will suggest you (including me ) that M22ti + Sub will be great. I got M60 yesterday and I love the sound...but i will upgrade my receiver to the Outlaw 950/7100 (pream/am).