Pros: Excellent SD cards. I purchased a 4 pack of these as a combo deal. I use them with my Raspberry Pi B+. The reading and writing of the images to the card is exceptionally faster with these Samsung cards than the generic SD card I got with my Raspberry Pi kit.
Summary: We bought 2 of these for our T4i dSLR video recordings. I have yet to fill them up before needing to export. We lost one and I miss it daily, but because of the sheer capacity, it's only a minor inconvenience.
Pros: - Fast - Super fast - Really large
Cons: A little pricey at around $60, but it will be cheaper someday.