I wasn't too impressed until I went to The Narrows. But if you're physically able the view from Angel's Landing is pretty great. It's more about the experience of climbing up the mountain though. One of the craziest experience I've ever had.
A great view but not much more than a side note on a trip to Lake Powell or Antelope Canyon. On the plus side it's free...
We camped on Lone Rock Beach and it was beautiful. On the one hand there were showers but it was sort of back country style so we had nothing to cook on. Great place to camp to go to antelope canyon and horseshoe bend.
Amazing, but the upper canyon was over $50 per person so we only did the lower canyon. The tour guide was great though and took some amazing pictures with my wife's phone.
It was a cool place to visit especially on the way to Page from Moab but not as engaging as either of the places it's between. The roads were pretty rough but we made it in a Toyota Corolla. There weren't really any hiking trails either which I was a bit disappointed by.