I've asked about CF cards on here before, I always get the Lexar/Sandisk recommendations. I know everyone asks pretty much gets that answer. 
I recently decided I wanted a couple 32GB cards...OBVIOUSLY my 16GB were obsolete!!! 
Well I decided to cheap out and save some money. 
These 600X Duracell are no where near the Sandisk in speed. 
I was warned... 
Now I'm buying twice. 




