IMHO, Bryce Canyon is much more spectacular than the GC. I visited both 2x on the ground, many years ago. And it has an airport.
In fact I was going to fly up to BC on the final spare day after I finished the IR at Phoenix but sadly in the end didn't bother as I was sick of flying solidly for the previous 2 weeks
And the plane available (PA28-161) could not have made it there and back without fuel stops, which complicates a one-day trip.