For a stunning view of Las Vegas, just get on the High Roller. You get to see all of the hotels around the strip, and some of the pool areas of the hotels where you don't normally see when you're on the ground.
The pods are relatively large so there may be other people with you if it is particularly busy. What's cool about it is there's a video inside the pod telling you exactly where you are on the ferris wheel. There's also an announcement for when you reach the very top of the circle and that's the time when everybody goes towards the edge and snap some photos. However, I can't say the photos are the best since it is behind the glass so I would just sit back and enjoy the view :)
I just thought of this because I heard of stories where people propose at/in the ferris wheel. If you're thinking of proposing, there may be other people in the pod as it is not guaranteed you have the pod to yourself. Just saying ;)