Excerpt: I have used CF cards for over ten years. Even inexpensive off-brand units have performed well through hundreds of write/format cycles. I purchased these SD cards for my Fujifilm X-E2. So far, they work as advertised.
Summary: I use these in my trail cameras so that I can just switch out the cards and download at home or in the stand. Some photos are blackouts, some are grainy, but most are perfect. Is this the card or is it the camera? No way to tell for certain.