I'm intruiged by the if M$ would make more comment on RAM? care to expand?
Also , I'm afraid your experience of Vista doesn't tally with teh majority of people I know. Even an Microsoft devout bloke I know agrees that Vista has some serious flaws in core functionality. (e.g. try getting Vista to connect to a WPA1 network), file deletion and general network file handling has some MAJOR flaws in it. For a flagship OS to have such problems is to br frank, scary.
I'd also like to understand how you feel the system is flawless when you say you do music production andteh soundcard drivers are buggy? Surely your whole purpose of music production relies on the sound subsystem working to perfection?
Impressive spec list though