I have a few emulators downloaded on my desktop internal hard drive. I would like to copy these emulators/roms over to some kind of external storage and then connect that device to a laptop for playing the games. There are lots of different kinds of storage like USB Flash Drives, ExpressCard, Memory Stick, SD Cards, and DVD R disks. I'm sorta computer illiterate and have no idea what is the best option. What do you recommend?