I fancied trying out the readyboost feature with my New flash Cruzer and it works a treat but if you have more than 2G RAM you might not notice much differance.
What I was pleased with and still am , is the U3 feature.
I thought it sounded handy when ordering it but now that im using it I think its brilliant. excellent choice if you want a password protected drive , and all those other applications too! sign up shield is great!