I've had the old-model Kizlyar Bloke Z for some time, and it's a solid knife, but this newer version is a massive improvement. The action, lockup, blade grind and finish, and pocket clip are all greatly improved. The only thing I might have kept from the old version is the scale thickness, because this new one is substantially chunkier than the old ine, which was already a beast. But overall, I'm very pleased and impressed. This is a brute of a knife.