Have until now only Sandisk memory cards used because they have good reviews and are reliable. Got the Transcend ordered because my Nikon D800, the SanDisk Extreme Pro 16GB CF does not recognize. Do not regret the purchase, Transcend is more affordable and has comparable performance. No performance issues with all features of the D800. Have the Transcend also in combination with SD cards from other manufacturers in the 2nd compartment of the D800 in use. The card has already been formatted several times, read and changed in other cams (Nikon D300s). Until now buy recommendation