I hope for your advise. I want to buy a REL Q400E or a Linn Sizmik subwoofer. I want to use both to HIFI and surround. I have heard Sizmik. It is good to HIFI, but I think it is week to surround. We have only one REL dealer in Denmark, and if I buy REL Q400E at him, he can't take it back again. Will you advise me REL Q400E or Linn Sizmik? Thank you very much.