Also, after trying numerous MicroSD/SD cards in my 1st 70d last year, and now using the new 70d with my new SanDisk EP SD card, the 70d seems to do the ERASE FORMAT, VERY quickly, when it has a card that it seems to like! My old PNY Elite from last year do the Erase Format pretty fast, but my new 64gb SanDisk Extreme Pro in my newest 70d, well it takes LESS than a minute to complete the whole ERASE FORMAT

Last year when I tried every card that I had[my M10 Micro SD cards mainly], the 70d took FOREVER to Erase Format a few Micro SD Cards that I used for my M10s! And subsequently, those were the cards that the 70d DIDN'T like, and had weird glitches when I did try to record to them! So if you have a card in your 70d that is taking longer than 10 minutes to ERASE FORMAT, then I would CERTAINLY test that card in front of the TV before I went "live" with it

Obviously, some of that super fast speed is due to my SD card being brand new, but I don't see it taking longer than a few minutes, even after owning and running the SD card for awhile

My [2] PNY Elite SD Cards finish the ERASE FORMAT pretty quickly too! About a few minutes MAX for the 32gb and about 5 minutes MAX for the 64gb PNY cards
