Hi joeking

32g I believe is the max. You would have all the space you'd probably ever need. Try and get the highest class rating possible: at least a 4 and if you can find it, a 6 or an 8. Also try for a reputable brand, not a Chinese nock-off. And beware of fleabay specials that say they're 32g, but really a 4g that has been painted over. Purchase from a vendor that gives a guarantee like Amazon.

I have a 16g class 4 SanDisk SD card and have over 1700 mp3s, 20 mp4 videos, a couple dozen photos, most of my apps and I still am only using 30%.

  I normally use sandisk cards anyway and always use amazon so thanks for the advise guys.

WOW!!!  ...now i'll definitely replace my sd card...this is a LOT!!!!