I have started to upgrade my system with a view to moving to a larger house with a much larger living room some time this year. I anticipate that the new room will be approx. 5m x 5m with high ceilings, based on our search requirements and properties viewed to date. The current system comprises; Onkyo TX-NR905 Monitor Audio Radius 225 centre, 270s front and 180s rear. Mordaunt Short MSW20 (hangover from first system) Pioneer DVD-656A LG 32PG6000 (will be replaced with a Kuro after the move) I intend to go for the Denon DVD-2500BT once the price falls a little further and use the the Onkyo for the processing (no point in paying for something twice). Anyhow, the sub is clearly the weak link. I read great things here about the BK Electric subs but have never heard one. Ideally I would like something that can be turned down for the current small room and that can then step up once we have moved. System integration and movie use are my priorities. Any advice or suggestions very gratefully received.