If what you want is speed then
http://www.amazon.com/exec/obidos/ASIN/B019NNEA2I or shorter
http://www.amazon.com/USB3-0-Mobile-.../dp/B017NU23P4 and an M.2 SSD is likely your best bet. You can have a 128GB M.2 SSD for $50-60 and the speed and reliability is so far beyond to these USB drives. There are even USB 3.1 enclosures.