I've now sold both of my former Arcam amps and want to put the money towards the Chord QBD. I'm currently watching a Chord 64 on eBay to get an idea of possible sell-on value for mine, and then hopefully I'll be near to the asking price of an ex-dem or used QBD. This is all a preamble for the ultimate question: is it worth it? The upgrade from 64 to QBD, that is. I've floated this query very recently in a similar thread but wanted to garner further opinions whilst I continue to deliberate. Any further thoughts anyone?