There are speedy USB 3.0 thumb drives, and then there's VisionTek's newly announced Pocket SSD. Apparently, the drive's "aircraft-grade aluminum" housing conceals a SandForce controller backed by enough flash chips to hit 455MB/s during reads and 440MB/s during writes—you know, about the same level of performance as a proper SATA SSD.
Those speeds don't come cheap, of course. VisionTek quotes MSRPs of $109.99 for the drive's 120GB incarnation and $174.99 for the 240GB model. To put those figures in perspective, Crucial's 2.5" MX100 256GB drive can be had for just over $110 at Newegg.
Still, the convenience of having SSD-like performance in a thumb drive can't be overstated. As VisionTek points out, the Pocket SSD can even be loaded up with Windows 8.1 and used as an "office-on-the-go" solution. (You'd probably want to follow these steps to make the Win8.1 installation portable first.) And, because the drive has a standard USB 3.0 interface, it should work happily on older, USB 2.0 systems at reduced speeds. Pretty nifty.