I recommend either Crucial, Sandisk, Lexar, or Kingston flash cards. I use MicroSD with a MiniSD adapter, as it allows me to move the same card between any device I want by simply using adapters where necessary.

And to the poster who said MicroSD maxed at 8gb, you're incorrect. They max at 32gb under SDHC, and the newer SDXC will go into the terabytes. Yes, I said terabytes, on a microsd. I got verified word on that from the SD working group at CES.