I recently moved into a 4,000sqft house and was hesitant about coverage with this device in my house. However I have been blown away. It handles our gigabit internet seamlessly and has 6-10 devices connected at all times. Definitely recommend this over leasing the equipment through Comcast.
Easy to set up but had to call me service provider to detect and authorize. That was simple and only took a minute or two. It is located in my office at back of house and I have much better signal at the family room TV at the other end of the house. I would recommend this devise.