REVIEW: iRobot Roomba 780 robot vacuum cleaner

The future promised a lot, and while robot butlers and hovercars are still pipe-dreams, robot vacuum cleaners are very much a reality. Hot on the heels of its IFA 2011 unveiling, Tech Digest got to spend some quality time with our very own clean-freak R2D2, the iRobot Roomba 780 vacuum cleaner. Read on to see whether or not it's time to send the Dyson to the dumpster.