I thought his set at Knotfest 2016 was actually pretty good. Guess, I got lucky, because Deftones ended their set with Engine no. 9. I've heard of the infamous "Wall of Death", never experienced it or really seen it tbh, although, I would love to see it while Dead Skin Mask is playing. I feel you on the Manson thing, seems like he is hit or miss on his shows, just like Rob Zombie, even though I've never been to a Rob Zombie or White Zombie show, Rob doesn't have endurance like when he was younger, and didn't seem like he had much then lol.
