Thanks BigJohn:
I think that I will take your advice and chill for a while.
That damn 'upgradeitis' bug hits periodically!
I'll probably end up buying the best bang for your buck receiver rather than purchasing a Denon exclusively.
Onkyo, HK and Yamaha all appear to be great products so I'll just get over the fact that my M60's need a Denon (or maybe they do?)!
Cheers,
Shaun