Summary: I was sold on "it cleans under the bed". I have no pets and my bedroom carpet looked clean. Boy! was I in for a surprise. The iRobot was full of dust and hair after the cleaning. I love it and the only reason I gave it 4 stars is, I didn't care for the cleaning part. Because the hairs were wrapped around the moving parts (brushes etc) it took a while to clean and unlike a regular vacuum, you have to clean it after every use. Otherwise, I am very happy with my purchase.
Summary: The old Roomba was giving random Error 3 and 7. This new motherboard and a new battery did the trick. Easy to install. Lots of videos and help on line. Like a previous reviewer, some of my motherboard connectors were slightly different from the Roomba plugs. A small amount of trimming with a razor did the trick. The secondary switch would not install at all, being a completely different size and screw pattern.
Summary: This is one of my best investment! It does a better job than expected. Roomba goes on random pattern until eventually it clean all the area. For better performance provide enough time to be able to cover the whole area/room This version does not bring virtual walls but I used the base to limit the area. Charging base works as a smaller virtual wall in which the robot wont go beyond the charging base. My house have a black tile floor and the Roomba works without issues.
Summary: Disappointed with this product. It looks nice, I like the concept, but if you are committed to a Roomba, I'd look at the higher priced models. This one is pretty 'stupid' and ineffective. It bumbles around my apartment and tends to miss dirty spots. When it does find dirty spots, its hit or miss as to whether or not it'll actually clean it half decently. Wouldn't recommend.
Summary: It was a difficult decision... I read through a lot of forums and reviews. Initially I wanted the 780, but at the end I changed it to 620. The simpler - the user friendlier! All my expectations have been exceeded. I have now used it for 3 weeks (3-4 times per week). I have 2 bedrooms, living room, kitchen, 2 bathrooms, 2 hallways). I live all doors open when I turn the "Duster" on.
Summary: The board mounted just fine,but........ I have a 550 model. The board mounted fine. The IR sensor in the 550 has a different plug, so I couldn't plug it into this board. I had to go online and order another one. The 550 body has a larger schedule button board than the add on that comes with this one. Again, my old board would not plug into this new board and the new board doesn't mount exactly the same.