Need a sub-woofer, bufget around £1000. got my short list down to 2. KEF TDM45B, and a REL Q400e....just can't choose between them! Will be using it mainly for movies, with a sony 725 dvd, sony 930 amp, spendor sp2/2 fronts, modruant short centre, mission 771e rears....any thoughts on which one??