I don't know about the 1000X, but the 2000X is the best card that I have ever used. It clears the buffer in my GX8 and G80 far faster than anything else I have tried.FYI... not a great card. You'd be better off with a SanDisk Extreme Pro UHS-1 for about the same money.
Do you believe in magic?The folks I know that have had issues with Lexar shoot Panny, Nikon, and Fuji. But looking deeper into Alik's test results it would seem Olympus cameras love them.