Chuck is 81 and is into photography now. He wants to know what the best SD cards are. Leo says that SanDisk is the best card for the money. But there's also Lexar, Prograde, and a host of others. Leo recommends staying with smaller 64GB cards so he's not tempted to keep all of his photos on a single card. If it dies, he's lost everything. So he should get several smaller cards. The real key is how fast the card is. SDXC cards that are Class 10, UHS III are the fastest. But his camera may not support that fast of a card, so he'll have to check. He should definitely go with Class 10, though.