I got this to mount a 55" TV over my fireplace. I cannot say how easy it is to install, because I had the contractor who was renovating my townhouse install it, but he did not seem to have any trouble doing so and it is very sturdy on the wall. I should note that it was mounted entirely into wood supports. We added extra wood between the studs before the drywall was installed on the fireplace for the express purpose of mounting this.
The instructions do say that it should not be installed just into drywall alone and warn against overtightening the bolts. The placement of the holes would make it hard to get all the screws/bolts into studs (unless you actually have an open wall like I did where you can add wood supports between the studs). If you can get all of the bolts into the studs it is extremely sturdy. Even if you cannot get them all into studs, you should easily be able to get about half the screws/bolts into a stud and if so it will still be very secure. I am very satisfied with it.
