I've been using this SanDisk Ultra 64Gb Card in my Verizon 8" Ellipsis tablet for about 6 months and it has been extremely reliable for storing and allowing playback of a large amount of movies I've converted from DVD to MP4s for the kids to watch. Since the card comes with an SD Card adaptor, I can easily copy the videos using my Mac's SD slot and then insert the microSD card into the slot of the tablet. At 64GB, I have plenty of room for 50 or more videos. I haven't noticed any lag or buffering issues when playing the movies back using the VLC Video application on the tablet.
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