Just wondering if anyone wants to point me in the right direction here. I want to add a sub to my stereo system at some point in the near future. I've got a pair of MA Silver S6s powered by and Arcam A80. Its really great and I love it, but I want to improve the frequency response and depth. Would something along the lines of the BK XLS200 sort me out? Quite a lot of people are raving about this beauty. Or do you think I need to be in the next league up going for something like REL strata / B&W 675 etc or would they just be too much? I just have no experience with subs and I don't really know what I should be looking at. Cheers.