By the way, to avoid killing off your sdcard early and become member of the famous "my galaxy kills my SD card" thread, make sure you use it as mass storage only and not 'live' storage. Let me explain. SD cards don't like constant writes. It limits its lifespan. You can move movies and music , pictures and downloads to it. However, if you download torrents straight to the SD card (constant access) or run storage intensive games from it, your SD card will like live a short life.
I run any cheap SD card for months or years without issues and it died (it and new ones) within weeks of using it as torrent destination.