Can anyone give me some advice please? I currently have my homecinema setup in my bedroom, my speakers are: Eltax Symphony 6.2 Fronts 150W Eltax Symphony Centre 75W Mordaunt-short MSB-20 Bi Polars Rears All running on a Pioneer VSX 709 RDS reciever. My room is roughly 4.5m by 3.5m and I want to know what type of sub would be suitable. My reciever kicks out at 5 X 80 watts per channel, but my reading of home cinema articles tells me that more often than not these ratings are not always accurate. I am considering a REL Q100E, Mordaunt-Short MSW20, and Eltax Atomic series...am I on the right track....can someone help me please???