SanDisk sent their Ultra 64GB USB 3.0 make of their ultra series flash drives, which is advertised to be up to 4 times faster than USB 2.0 drives in comparison to their Cruzer USB 2.0 counterparts. However for such flash drives, any brands mostly point out the read speed.
5 Years Warranty; Retractable design
Bad write performance; Not recommended for frequent file transfer purposes