I have been using this 32 GB flash drive without problems for over a year:

http://www.amazon.com/gp/product/B006M6D3XC/ref=wms_ohs_product?ie=UTF8&psc=1

It disappears on my key ring. Go with the most storage you can afford. I recommend making an encrypted folder with TrueCrypt. I have a 16GB encrypted folder and leave the remaining 16 GB unencrypted. I store non-critical files on the unencrypted portion. Stuff I would not want others to see goes in the encrypted folder.

Another note, I consider ALL files on my flash drive as being temporary. Please don't be one of these risk takers who uses a flash drive as permanent storage with no backup of what's on your flash drive. If your flash drive suddenly vanishes or goes scuba diving, you should not be hard pressed to replace the data that's on it.

By the way, I had not previously heard of these fancy flash drives that others have posted here. Cool stuff, I might go that route if my flash drive ever fails me.
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