Memory consumption is a way of life and with more cameras adopting the SD card format, you may need to stock up on some more media. Or you could just buy one of these and be good for a very long time. The Lexar 128GB Professional SDXC Card is currently the largest SD card available. Fortunately you don’t have to skimp on speed at this size since the card is 133x. At $250, it does carry a small premium although not as much as its SanDisk Extreme Pro 128GB CF counterpart.