I just noticed that Amazon in the UK is selling class 10 Transcend 16GB and 8GB SDHC Cards.
Should be good for Pandora's I guess.
(http://www.amazon.co.uk/Transcend-16GB-SDHC-Class-Memory/dp/B002WE4HE2/ref=sr_1_2?ie=UTF8&s=electronics&qid=1274771931&sr=8-2)
Peace!
Edit: Correction, Go Memory...