Hi chaps I'm in the market for a new sub I've had my Yamaha for about 7 years and it was an old model when I got it. The room it will be going in is 6mts by4.5mts with Celestion A2 floor standers at the front and Mission & B&W as the rears with a Castle Keep hoding up the front. The short list I have drawn up or should I say long list is, XLS200,MS309,PSW2500,Mission M3AS,Mission M75As,all roughly the same price. The one I'm leaning towards is the XLS200 because of the good reviews on this forum,but am wondering if it will be big enough. Cheers Mike. Denon2900,Harman KardonAVR430,Celestion A2's Castle Keep, Mission 71's B&W Solids,Arcam Alpha 7,Hitachi PD42000.