(NEW) iRobot Roomba i4 Wi-Fi Robot Vacuum

UPDATE: I finally gave up and bought a manual vacuum cleaner. I was spending more time coaxing this thing to do its job than it takes me to vacuum the floor myself. Changing to one star. ----------------------------------------- I had a Roomba 770 for years that finally wore itself out. So, when it was time to replace it, I felt confident buying another Roomba. After all these years, the newer models had to be even better, right? Now I wish I'd done a little more research. Pros: This thing cleans well, and hair almost never gets stuck to the rollers. This is a huge improvement over the older models. I've only had to pull the rollers out and clean them once in the past 6 months. Cons: There are two very annoying reasons I regret this purchase: 1) It gets stuck constantly under the corners of my couch and I have to free it. My old Roomba used to do this also, but more often than not it would free itself. This one just gets stuck and, rather than attempting escape maneuvers, it just keeps pushing itself further under the couch. 2) It constantly stops cleaning and says, "Empty the bin." When I check the bin, it is has very little dirt in it. I have cleaned the bin, cleaned the sensors, and cleaned everything I can to reduce this behavior, but nothing works. Because of these two incessant problems, I dread turning the thing on. I know I'll have to babysit it like it's a two-year-old child. I would not buy this model again.