I'm looking for a subwoofer for use with music and also movies. Room size is around 20x12 but has quite abit of furniture already making placement more difficult. My front left/right speaker (Cyrus CLS70) have -3dB point at 50hZ, centre and rears (Cyrus CLS50/50C) have -3dB point at 50hZ. I have a Cyrus AV8 processor that allows a variable crossover to be set for the "small" speakers. I noticed the SVS seemed to be popular on this site (and very well priced given the current exchange rate) but given it's size it would have to be placed very tight in the corner of room to even get it to fit! About the only alternative position would be behind the sofa but that would sit it directly next to the listening position. I have also been looking at some smaller box types (or lower profile) which would hide away easier. What is opinion on the following: B&W ASW675 REL StrataIII REL Q200E / Q400E MJ Acoustics Reference 150 I find it hard to get any real data or be able to compare these models. I did find some graphs and reviews on the B&W which seems quite an acomplished sub (although no distortion figures to compare with the SVS). How do the others compare to that?