I just bought a Western Digital 500GB My Passport Elite. So far so good! I needed to get the music, movies, and pictures off of three computers and it did this task no problem. Came with software. Once you run it (yes it takes some time cuz USB 2), every time after it will only download the newest files from your computer. Fairly fast unless you are loading Gigs of data every week! Only bad point is the software will not save system files.
Guitars: '06 Les Paul Classic Goldtop, '07 SG classic, '79 ES335TD Blond, '88 Telecaster, '08 Custom Shop Strat 57 NOS, Framus '69 Goucho Acoustic, '72 Framus Caravelle hollow body, '09 Hagstrom Swede, '10 Ibanez AG95 and '69 Heit
Amps: Fender Blues Deluxe Tweed, Marshall JCM 900 50W full stack, Roland Cube 20XL and '69 Checkmate!
Pedals: (all DVM) Tremolo, "Rabid Rodent" distortion, "Zonkin Yellow Screamer" OD/Boost, "Gee Ain't That Swell" volume swell, and "Mega Muff" fuzz