Amazon User
I originally bought a Samsung equivalent and then my phone was stolen, so I made the switch.  I have done some research and realized the class 10 and the SDXC are very important as it is the quickest rate of transfer.  However when you read Samsung's description and this one, Samsung claims 80 mbps and SanDisk has 30 mbps, after using both they are identical.  The class and the sdxc are the most important, they are almost absolutely identical.  Samsung's equivalent is $65 and this was under $50.  I haven't noticed a bit of difference, besides that maybe this mircosd card is a bit quicker and easier to move files around.  I store a lot on my phone, which is a Samsung Note 3, this works beautifully.