When I go out on a boat to shoot a yacht race, I can't afford a failure.

Love these...work well with my 5d3, I use the CF for RAW and the SD for JPEG....unless it's a wedding than I use both for RAW....never had a failure with Lexar....knocking on wood...

No failure issues as some have reported with other flash cards.

Because Lexar comes with photo recovery, I am attempting to recover the images that are as of now not-readable, but the cards will be returned once that attempt has been made

Works as it should.

They are dependable and work exactly as they are supposed to work.

Shooting in just RAW was super quick and I could blast away, as well as the 50 mp, no problem with rapid fire.

continuously getting I/O problems while reading from the card

This CF card is extremely fast and the rescue program that comes with it i very helpful (had to use it ones)