USB thumb drives

I'm looking for a good thumb drive to replace my 16meg that I stole from my girlfriend's brother.  I'd like for it to have a loop to carry it on a keychain or a belt clip to carry it on a belt.  At least 256mb, maybe 512mb, and password/fingerprint security are plusses, although unnecessary.

It's gotta be durable enough to survive in my pocket with my keys.  Anyone have any suggestions or recommendations?  Horror or success stories? 

>>2

Is the LG drive bootable?  All I'd really need is less than a meg to create a Win98 rescue disk so I can boot to an XP CD that's not working out for an old Thinkpad laptop. 

I think that the CD-ROM drive might be bad, so this'll at least help me pin it down...