Also...depending on how you use your reader, you might not need a memory card of any type. I currently have over 150 full length novels (including two complete copies of the Bible) and still have plenty of room.
Many have reported that using the SD card can reduce the battery life between charges. In most cases this isn't a huge factor though. When I had a card in, I would still get at least two weeks between charges--with daily use.
Enjoy your reader!
dordale
