Hey, jtmccoy
Everyone that's posted on the 4's seems very happy with them and as far as I've read the 4's and 8's are pretty much the same sonically. The 8's are designed for larger rooms and the 4's for mid to small size rooms. The difference is similar between the M60 and M80 both are sonically almost identical its just that the M80's play louder. At 3 to 4 feet away the 4's would be just fine.
As far as the what if....QS8's? only you can decide if its going to be a problem for you. For me I decided I didn't want to wonder so I went with the 8's, but quite honestly sonically there was no justification for me not to go with the 4's as I only have a medium sized roo.
So if $$$$$$ is a big issue, go for the 4's and be happy that you have one of the best surrounds on the market.
Cheers, Jag
