Just upgraded all my interconnects and speaker wire to bi-wired odessy 2 (2 runs) ,corus2 interconnects.
The results were stunning, best £600 I've spent.....It was like listening to a new system, much much more detail , improved bass..deeper, taughter.
Problem with speaker cables and new interconnects is that they just do not give you the same buzz walking out of the shop coiled up in a bag as you do with new peices of equipment. Silly really because this upgrade made more difference than beilieve it or not a new cyrus8se + psxr which I demo'ed at home only a few days previous!
Alan