SanDisk Extreme Pro 64GB Class 10 SDXC Memory Card U3 SDSDXPA-064G-FFP [Packaging "Free Packaging Amazon Frustration"] (Accessory)
I only use the sandisks for over 10 years, I've never had any problems with my cards. Yet they travel, the bag mouth, in all conditions (almost, not tried the north pole!). This on my D800 fine with me.