whats the best USB drive i want to use it like a key and store dashlane passwords and such

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i dont usualy do somthin like this but im going to start. i was wondering if there is any specific usb thumb drive that would be good to store passwords on using dashlane or roboform everywhere. also any other really helpfull tools would be great.

also would you use a usb password stick would u use same stick to also house some basic computer fixing tools? or would this be bad to store passwords on same device as usb/computer tools

 

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seperate question

would a AES stick automaticly encrypt everything as it goes without needing to activate or select encrypt all the timke would somthing like this automaticly encrypt
http://www.newegg.com/Product/Product.aspx?Item=N82E16820171521&ignorebbr=1