Kershaw and Buck the most often.. Case have been pretty terrible for me the past few years.. They apex, sometimes evenly, but dat burr, tho.. They just leave it on there. Last 3 cases I bought were like that, one little fixed blade and 2 different trappers. I know that a 'bad batcb' wasnt responsible, because they were so time-spaced out and different. Absolute worst for me out the box has been Bear. I bought a 110 style lockback a while back that was totally un apexed halfway up from the pivot all the way to the tip. The bevel that was there was probably 35dps.. Yuck. The first bear I ever got was a Damascus straight razor style folder, and it was effin sharp, but no symmetry at all to the edge.
Lately, I havent bought a NIB anything, so I dunno who is crappin the worst polished turds into their boxes these days.