iBuy iRobot Blog Guide

I was thinking about buying one of those irobot roomba vacuum things, but im not wanting to waiste 500 dollars on it if its going to break down after 1 use and i dont want to buy of the site because im pretty sure its not australian, has anyone had one of these, is it good, would you go back to a normal vacumm, is it worth the money, please dont answer this if you work for this company in anyway i want answers from people who have had iether good or bad experiences not from someone who has to talk good about them or gets fired.