When I ordered my camera I ordered a Sony 128GB XQD G model card (400 read/write). I received the card before I did the camera. I am now kicking myself for not ordering at least 2. B&H has the same card in stock for $188 I think it is. That's $48 more than I paid back in Sep. Clearly with the rush of sales for the camera, and Lexor may or may not shut down. The prices are way up. So my thinking is maybe buying one of the slower cards as a back up. And was wondering for those that now have a D850. What cards are you using. And if you feel they are good. Or if you wished you had a better performing card?