Thx for doing the test! I wonder how the sandisk extreme pro 90MB compares to the Lexar 600x. I currently use the Lexar 400x and sometimes I really think about how much more I would gain with a faster card. I've used several class 10 cards on the D600, I think the costco bundled sandisk class 10 is too slow and so is a sandisk ultra 30mb. But like what everyone says it all depends on wether you shoot continous burst.
Has anyone tried 2 fast cards and configuring the D600 to store raw on slot 1 and jpg on slot 2?