DDR Dominator 3.5: extremely warped blade, deep scratch in titanium clip
Boye Cobalt Basic 3: large, very deep scratch in spine with a surrounding gouge where they unsuccessfully tried to buff it out, extremely uneven secondary bevel
Manix G-10 S110V: poorly centered (warped?) blade
Native FRN S110V: huge chip in forward face of lock well which prevented tight lockup
Autonomy 2: metal shavings falling out of the action due to a known engineering defect where the tang galls the locking pin on deployment
Condor Yoshimi: returned twice, both for badly warped blades
Masalong Pterosaur: tip bent the first time my son inserted it into the sheath
Cold Steel Large Luzon: failure to lock on light deployment
Work Tuff Elbrus: blackwash finish literally wiped off on a paper towel
Ka-Bar Ek Model 4: 1/16" of tip snapped off from factory
Kizlyar KO-2: massively warped blade
Kubey KU150 Panthera: returned twice, first return was for a big scratch in the pocket clip, second return was because the knife's packaging had suffered some sort of ingress-at-sea, and was a solid mass of rust
Kubey Darkness: Listing showed revised KU065 D2 version with nested liners, received earlier KU003 version with AUS10 and flush liners
Cobratec FS-X Large D/E : Action completely seized, would not deploy a single time.