My recomendation for SD Cards For D6/800

[DSolZ]

Good info. Thnx to ts

 

[nikkidi]

Current models for Sandisk SD cards:
Standard (blue): class 4 (except for 2GB where no class is specified)
Ultra - three types: 1) UHS-I, 30 MB/s, class 10. 2) 20 MB/s, class 6. 3) 15 MB/s, class 4 (4GB only)
Extreme - 45 MB/s, class 10, UHS-I
Extreme Pro - 95 MB/s, class 10, UHS-I


Anything else you see is old models or could be fake. Extreme II or III are old discontinued models.

For performance tests, you might want to look at this... Remember to select the camera you are using. Different cameras can give different results.
Rob Galbraith DPI: CF/SD/XQD Performance Database

woah the website is really useful. The CF extreme pro is just a little to expensive. I think i'll get an extreme pro sd card with a cf card as backup. Shld be fine right ?