I've gone through at least four Kriegers, a bunch of Pac-Nors, an Obermeyer or two and probably a couple of others that don't come to mind on 223 AR's at the moment. The Kriegers were good, but no better than the others. They had Wylde and CLE chambers. One Krieger had a SAAMI 223 chamber that shot good, but blew primers regularly. Several friends had similar experiences, so I think it might have to do with the SAAMI throating. I even have a couple of Colt Chrome 7 twists that hold moa in spite of their NATO chambers. I do have a couple of Wilson AR barrel that shoot lights out, but they're in 6mm, so it's probably not relevant to this discussion. I did just realize that I do have a LW barrel that came on a 6.5 grendel, but again it's not 223/556 so not relevant to the discussion.
Barrels are a consumable for me. As long as they shoot 10 shot MOA, they're good for me. Some shoot better. None have shot worse. I'm not attached to any one maker (okay maybe Obermeyer, because I can hardly get Boots to make me one, and I got one waiting in the wings that Grandpa Wylde himself sold me) as long as they shoot and aren't finicky about what they eat. I think it's good to share experiences with your barrel, but folks making broad claims off of sample sizes of one or make similar broad claims based on what they read on the internet kill me .
My advice to the OP is to get a barrel from someone experienced in the purpose you're purchasing it for. Make sure they're prepared to offer service after the sale. Try as they might, no one is perfect, and a bad barrel or upper might get out the door. How they handle it defines for me their worth. White Oak and CLE are top notch in my book in that regard. Pick a price point you're willing to pay, and apply the above criteria and I guarantee you you'll walk away happy.