Guys, if you were recommend one CF model for the 7Dii, what would it be?It depends on what you shoot, but the I'd go for at least 32GB and probably 64GB and the latest 1066x / 1067x cards from Sandisk or Lexar. They aren't cheap, but will last you for many years. Also, Adorama runs really good sales on the Lexar cards pretty frequently. The 1000x cards are a good compromise if you don't want to spend so much, but make sure you don't fall for the 800x cards. They are a lot cheaper, but they only read a 800x, and write far slower. It's great to download, but lousy for burst shooting.
I don't know, maybe UDMA6 or UDMA7 (133+MB/s) card makes a lot of sense for large amounts of data transfer through USB3 reader, but I think that anything with ~60+MB/s is fine. Sandisk, Lexar, Kingston, Transcend... doesn't really matter. I would go for better price.