General Which external sd card is the best for Galaxy Note 2?

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http://androidforums.com – Hi, I took my GNote's external sd card and put it in the Note II LTE. The card is SanDisk 16GB micro HC. As far as I recall, it is about class 4 or 5. Whenever I open /storage/extSdCard/DCIM, the sign "Processing..." shows up and the circle keeps spinning, I have to wait for about 20 seconds in order for the list to show up. Anybody knows why it takes so long? I don't recall having to wait for such a long time when I was using the Galaxy Note. As the GNote 2 is faster, is it time to get a faster SD card? Which one do you recommend? I take lots of photos and videos. Thanks. (General)