With an 8Gb USB drive, mobile computer repair gets very easy.  Not only can you store entire anti-virus/spyware programs, plus updated definitions, with newer motherboards you could set it up as a boot device for MemTest86 and other boot programs.  Virtual-Hideout has posted their review of the Corsair 8GB Flash Voyager.
“I can totally recommend this unit to anyone looking for a large capacity USB 2.0 flash drive. You just can’t beat the warranty, the durability and the read/write speeds of the Corsair 8GB Flash Voyager.”

Here are some more Storage reviews from around the web:

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