I just sold my MX6 and purchased a Firebird. I sold the Boston Pros on ebay so now I need some new components. I use no rear fill and the comps will be hooked up to the amp in my sig so there will be plenty of power. I really have no idea how either of these speakers sound and my original choice was the Polk SR6500 but the guy wont be able to get them for me for the price he said he would ($295). I listen to only rock and I really got tired of the harsh tweeter on my bostons. Not too long ago I purchased some NHT SB3s for my room and these speakers are incredible. These speakers seem to be the reference point of all sound for me. What do you guys recomend? Im guessing I can spend up to 400 shipped.