I love this mount. It really works great. I have a very large ZTE phone, and the mount adjusts wide enough to hold my phone (which was my main concern with purchasing a mount). All the settings lock in place, so you don't have to worry about your phone falling out. The sides hug your phone very snugly, and there are 2 legs that hold the bottom of the phone, so the phone has nowhere to go.
I've read a couple complaints about the mount not staying in place. It is a heavy mount, but the suction cup works just fine for me. There are many ways you can place your mount. If you have issues with the suction cup not staying in place, I would try placing the mount in a way that the weight is more evenly distributed. But again, I haven't experienced this issue, so as far as I can see, it doesn't budge.
Overall, I give it 5 stars. It's exactly what I had hoped for.