Ran about 12 days this months with my muskeg. 4 days were 50+ lbs and while Its extremely comfortable, and I like the layout, I cant get past how strappy it is. I also, kinda like the idea of more streamlined look and feel with bigger side stretch pockets. For all these reasons, I was looking to try out a SG 6900 and or a new EXO 6400. My only hesitation is the lack of comfort when hauling 50+ lbs.