Too bad the design is so ugly; I'd prefer something square & stackable, preferably black as well - form factor being more important than color, though. USB2 is probably also limiting, even if the drive used is 2.5" its likely able to do more than 32MB/s (where do tomshardware get that figure from, anyway? While you're not going to reach full theoretical speed, USB2 is 480mbit/s or 60MB/s).
ReBit sounds like a pretty nice solution. Haven't read extensively on the details, but it sounds somewhat like apple's TimeMachine or Genie-soft's
timeline? I think I'd prefer something that didn't make the data partition invisible, and relied on regular folders and hardlinks (akin to
rsnapshot)... but hiding the partition is probably a smart move for non-techie end-users.