SAMSUNG Pro 64GB MicroSDXC Flash Card Model MB-MGCGB/AM SAMSUNG Pro 64GB MicroSDXC Flash Card Model MB-MGCGB/AM

Pros: Very fast, used HD tune pro to test this mighty card and it performs to specs. Also performed a real world 12gb file transfer (write) and it took about 5min connected to Kingston USB 3.0 micro SD card reader.
Super stable and doesn't crash my phone like sandisk did.

Cons: It doesn't perform fellatio.

Other Thoughts: Great micro SD, don't hesitate to buy it and stay away from sandisk.

Pros: Quick delivery.

Cons: None

Pros: It's a 64Gb microsdxc for about $50. Works great in my Rezound.

Speeds are good, not notably different from my 32Gb Samsung class 10 it's replacing.

Cons: When replacing my 32Gb card, it took two tries to get the data over. The first copy (using Windows 7) resulted in my phone identifying the card as corrupted. So, I formatted it with my phone, then I then tried via Linux Mint 14.1, which worked fine.

Packaging was very minimal and hard to open. It's basically two pieces of pressed cardboard with a clear plastic between them and the card raised. Cardboard was not easy to tear, had to rely on scissors.

Other Thoughts: It's not a bad deal, but it isn't any better than other 64Gb microsdxc right now as they all hover between $55 and $60 and they're all class 10.

Pros: Fast card, enabled BitLocker on it for use on my Surface Pro and barely took a hit.

Cons: Real world speeds are slightly lower than advertised but still very fast.

Windows 8 Pro W/O BitLocker a 4GB ISO copied to and from the card: 18.0MB/s Write, 55.0MB/s Read.

With BitLocker enabled the same file: 16.8MB/s Write, 60.6MB/s Read.

Other Thoughts: Smaller files copied much slower as they usually do but I'm very pleased with the purchase and every Samsung product I've purchased has been a quality product.

Pros: Reading around 60MB/s for large sequential reads, writing around 16 MB/s for large sequential writes. Copied a bunch of SNES ROM's at around 6 MB/s. Doesn't randomly unmount and remount when accessing like the Sandisk 64GB class 10 did.

Cons: More expensive than the Sandisk competitor.

Other Thoughts: NewEgg really needs to get these back in stock. It's faster and more stable than the SanDisk.