Thanks Ian - I'll try harder in the next exam 
TBH, I haven't heard enough TTs to be able to say what I like that's better about CDs but I'm not that bothered. Even if I had, and, like merlin, came to the conclusion that vinyl was better, I wouldn't switch as I'm quite satisfied with the sound I get from CD.
Perhaps I should listen to a TT to see what I'm missing. Then again perhaps I should listen to a full dCS setup with £50Ks worth of amps and speakers to see what I'm missing. What's the point? I'm not going to switch in either case.
Michael.