ikey requires an additional storage device. The ones with it built in (like the m-audio) are for more pricey, but it depends on what you want it for. Your best bet however is going to be to search on this forum for small software apps that people on the forum use on the laptop at the same time as SSL, because that is free and you don't have anything extra to cary except 1 cable.

I use my iriver h320. Its an mp3 player that can record. Its quality