Hi all. I've been planning on picking up a 5153 for a while now and have managed to find a bstock head for £699 (new £919). I've spoken to the store and they've advised that it was returned to them for faulty tubes but this has now been rectified but of course can't be sold as new. Has anyone ever bought bstock amps before and what are your thoughts? Am I taking a risk or should I just pay the extra and get a new one? Thanks