Any Nikon users use Sandisk? If so, have you had problems? I've used Lexar and Kingston with no problem. Sandisk, I lost many photos because of the CHK error displayed on the screen.Sandisk says that they include RescuePro with every high end card. Which makes me ask, Why do I need rescue pro, if your cards are so good? I would like some feed back from the Nikon users. I'm new here, but not to photography. I have about ten years in photography and have been in business for four. Thanks ! :thumbsup: