I remember from my iQue days that SD cards came in all flavors. What is the best SD card for use in the Captivate? We needed fast write for our maps, and I know you want that for cameras, so is that the case here, too? I'm not into cheap, I'm into quality at a good price - any suggestions would be great! I know we can go up to 32 gig, is that totally necessary (I know we can never have enough space, but money, while it isn't the key factor, is a factor here).