OK. So I was going to get a Mordaunt Short 907W but I don't have the patience to wait two weeks. As an alternative, I have been offered an ex demo Vibe Alpha One instead for only £12 more than the 907W. Has anyone got one of these and if so, what do you think of it? What I do know is that it is a 200W powered subwoofer and is roughly a 12" cube which is ideal for my size of room.