Ok, so now i am going to replace my bose and give them to my 19 son. (Thinks Loud base is all that matters) With the rx-v2400 as my receiver and a 18 x 16 room what would be my best selection. Where can you go to listen to these speakers. I am in N.E. Ohio. Looking to eventually switch the 5.1 yamaha surrounds as well. For now I am interest in 2 tower speakers to run. Is it a good thing or a bad thing to run Impediances of 4 instead of 8. If I were to get the m80ti would I be able to run 4 ohms on my on one set of speakers and 8 on a separate (say speakers 'A' and 'B') setup. In what instance would I want the m80 instead of the m60.