Here goes:
Most likely the Southern Winds—Cirque of the Towers. Big Sandy Trailhead to Dad’s Lake over Hailey Pass to Baptiste Lake to Valentine Lake to the Cirque down Jackass Pass to Big Sandy Trailhead. Epic!
But others that are almost as good:
the Trans Zion (Kolob Fingers, Hop Valley, Wildcat Inter-connector, West Rim, East Rim)
Wire Pass to Buckskin to Paria to Lee’s Ferry
Northern Winds from Elkhart to Green River Lakes
Coyote Gulch