Hi, I've been having nagging card issues with my DX, and I think it's due to the non-name brand (A-data) 16GB card I've been using. The problem went away when I switched to another card as a test - it was a 4GB card though. So I'm trying to find a replacement card that's either 16gb or preferrably 32gb that is reputable, fast (at least class 6), and reliable. I'm trying to stick to Sandisk, but I can't find any class 6 cards from them at 16gb or 32gb. Lexar has this card which looks promising: Amazon.com: Lexar High Speed MicroSDHC 32 GB Class 10 Flash Memory Card with Reader LSDMI32GBSBNAR: Electronics But it has a few scary reviews. Any opinions and suggestions?