Thanks Guys
Having just loaded Spotify onto my iPhone, I get 48 hrs of Premium that's automatically available from my laptop. It does sound a lot less flat now but the bass a little lacking in definition. Mids & highs are much better.
If iTunes was as bad some people think it is, I wouldn't be using it. In the coming months, I'll be trying out foobar2000 & looking into optimising it on W7. Between then, I find 320k VBR on iTunes excellent for even classical music. I know some people don't like iTunes, that's their privilege. A friend won't listen to anything but flac - I just lie when I play music to him - he ends up being happy. Other people have told that iTunes sounds a lot, lot better than they expect when they've heard it on my system.
I still have a CDP to compare with.