Wesley Eadswrote a review of Santa Cruz Bicycles Megatower Carbon CC X01 Eagle Air Complete Bike on October 10, 2019
Familiarity: I've used it several times
To get the obvious out of the way this bike is big and for how big it is it does climb relatively well. I would not expect this to replace your trail or XC rig if you enjoy PRing climbs and cruising descents. But at 170/160 this bike will climb up most trail rides relatively comfortably and with only a bit more labor.
As for the down this bike rides really well but it takes quite a bit of speed or chunk to really make the bike feel alive. I think if you are riding downhill bike parks or want to smash and grab rooty rocky sections this bike is awesome. But if you are more on the casual end of enduro riding I find this bike to be a bit much. I personally like a bit more poppy and playful feeling when I ride which I would say you don't get as much of out of the megatower. But if you plan on pointing it and rolling through whatever terrain comes by without getting bucked around the Megatower is great.
If you are only a quiver of one rider this may not be the best bike for general purpose riding unless you charge hard and spend a lot of time spinning lifts or riding park. But if you want a fun smash and grab bike to add to the quiver this bike is a riot in that category.
I'm 6'2" 175lbs with a 34" inseam. I have ridden both the L and XL comfortably. Overall though I think I would go L just to be able to move the bike around a bit more easily.