Have been using Project Fi since last year and am VERY happy with it. I seldom use over 1 GB of data, with the vast majority of my access being via Wi-Fi, no matter where I am. Because of this, my monthly bills are almost always under $30. You can refer other people to the service and get a $20 credit every time one of them subscribes. Calls can also be completed with Wi-Fi, which is a BIG plus when in areas with little to no connectivity. I travel all around the United States, as well as to Canada once or twice a year, and have hardly never had an issue with connectivity - When I have had a problem, once in a Blue Moon, others using different service providers did, too. I have convinced 5 people to switch to Project Fi, as well as knowing s few others who use it, and have not heard a complaint from any of them. Project Fi may not be for everyone; but it works great for us!