I don't want to upset anybody,but in my opinion any SD card would work . I have quite a few laying around, some of them are really old and I never experienced any problem.Key point is making sure they are formatted FAT16 for software and MBR updates.
mrdeano ,the card you asked about is far too expensive,I hope you don't wanna buy it there!!
I got this from amazon:
Transcend - Flash memory card - 4 GB - Class 6 - SDHC