Both are incredible, but it really depends on the kind of experience you want. Southern Utah feels more focused with those intense red rock landscapes and quieter trails, while Arizona gives you more variety but often with bigger crowds in popular areas. If you enjoy peaceful hikes and unique formations, Utah often feels more connected.
While planning trips like this, I found
Sense of Safari useful for thinking beyond just scenery. They explain how timing, route planning, and choosing less crowded areas can shape the whole experience. Their advice on finding quieter, more immersive spots really helped me look at destinations differently.