We were disappointed with Zion because you have to take their buses, which have several stops, and it is difficult to see what you want to from the buses or the stops. I understand why they do it, it's because of the crowds, but it is annoying just the same. We did a couple of the hikes in Bryce Canyon and they were well worth it.
If you can make your way to Page, Arizona (top of the state, near the middle, at Lake Powell), Antelope Canyon is amazing. It was the highlight of our trip and should be on everyone's bucket list.
2012 Cruiser Sahara 330SS
2015 F250 Super Duty diesel