Your Wheel Size “Sweet Spot” Will Evolve/Devolve
You’ll find my thoughts on 24" vs 26" vs 29" MUni, and the unintended effects of handlebar design here 
: "Official" 24" Muni Tire/Tyre Review Thread - #31 by UPD_in_Utah .
Present situation: I’m currently mostly riding my 26er (Oracle w/ 26 x 2.35 Hans Dampf tire for nimbleness) on local trails, and I enjoyed riding it at the Moab Munifest.
Why have I returned to 26er MUni from the 29er MUni? Mostly because my regular riding buddy rides a 26er and I want to match my speed with him. But also because my current set-up performs so well, and climbs so easily. And, I do feel more confident when I’m a little closer to the ground. (It’s a long way down on a stalled 29er.) That being said, I’d have a hard time returning to 24" MUni. Why? It’s just so slooooow and susceptible to irregularities in the trail. My Nimbus 24" now sports a Chen Shin Cyclops tire for urban use and learning simple street tricks – and it rolls so much better & faster than my 19". 
Bottom line: 26er MUni is currently my favorite but my 29er is feeling neglected, and I’m missing its inherent speed and rolling ability. (Hmmmm, maybe I’ll ride the 29er this weekend.) 
Happy Trails,
UPD in Utah