They sell 24x CDRW media at
www.komplett.co.uk ...they also have Verbatim DataLife Plus 48x discs, and they're supposed to be good. (the 24x Verbatim discs I have are working well so far)
For cheapness,
www.121cdr.co.uk can't be beaten, as far as I am aware. They sell some Ritek and Prodisc stuff, so it's reasonably good quality over there.
look in the thread up at the top of the list and check what types of media your CDR gets on well with...if I'm not mistaken, you have a GCE-8480 so the Verbatims should work well
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