These are all essentially the same type of device. Different manufacturers use different terms, but they are all external storage devices that you can plug into your computer's USB port. These versions of JAWS and MAGic can also be run from external USB hard drives. There are even reports of users installing this version on their iPods and running it on their computers.

 The best thing you can do for any flash drive is to unplug it from your computer when it's not in use. Flash drives fail because reading and writing data from them wears out the inside the memory chips. Some programs and even windows itself will sometimes send a signal over and over at a given interval to re-check the amount of space available on it, check if the drive requires compression, check to see if the drive is even still plugged in and writeable, etc. All that extra read and write activity can shorten the life of your drive significantly.

Don't keep it near any sources of electromagnetic radiation (or any other type of radiation really). So don't set it right next to your speakers, a CRT monitor or TV, wireless and cell phones, or power strips.

You personally can keep at least 3 copies of your data (be it pictures or whatever) one on a network drive, one on the local machine, and one on your usb drive. i trust hard drives more yourself, but both flash and hard drives have a tendancy to go bad.

Always keep more than one copy of your data just in case!! get a good backup program (like genie backup myself) and an external drive (western digital makes a great 1tb drive that can do raid1 and have redundancy).