Second largest SD card you can get your hands on (recent sandisk topped it at 512GB) Good class 10 card with well received read and write speeds. Seems to have a excellent warranty and durability. Just note that XC is the card's format before buying it!
Specs From PNY:
Format: SDXC
Ratings: SD, Class 10, UHS-1
Read Performance: Up to 95MB/s
Capacities: 64GB, 128GB, 256GB
Durability: Magnet Proof, Shock Proof, Temperature Proof, Waterproof
Got mine for $115.10usd including shipping to Bowral(NSW)- Very good price for a 256GB SD- best I've seen so far :)
will it work on a D800?