"Very fast and lots of storage with one catch"

I got this memory card for my Samsung Galaxy S3. I was running out of room on my Sandisk 32gb Class 4 micro sd card. I also wanted a faster and more durable card. I was hopping to put lots of media on it. In addition to nandroid backups and custom roms. I later found out that since this card is formatted in ex-fat it would not work to make nandroid backups or flash custom roms. Most custom recovery and custom roms dont work with ex-fat. So my only choice was to format the card to fat 32, which meant I couldn't put any files larger than 4gb on it. Besides that this card is great and very reasonable price of $50. If your some one who doesn't root their phone or put custom roms, nandroid backups or put files larger than 4gb than this will not affect you. This memory card is fast and provides the most storage you can put on your mobile device at this time. The card is also water proof, shock proof and comes with lifetime warranty. Ive never had any issues with sandisk memory cards or usb flash drives. They last a really long time.

"Junk."

Does not work. I have a card purchased at Best Buy that looks identical side by side. BUT! Transferring music onto the Best Buy purchased card was extremely fast. 100+ meg albums transferred in 2 to 3 seconds. On these cards, a 61 meg album was at 18 minutes remaining with less than a quarter of the album transferred. I bought two, so I figured maybe a bad card. Tried the other, same thing. Extremely slow. Wonder if they are even real.