I picked up an S30V "Spec Bump" off ebay for about 60 (yes, that's sixty). It has 3D machined G10 scales and an uncoated blade. Get in contact with me if you want seller's info.
The knife's ergonomics are near perfect. It goes with the hand like milk and cookies due to the swells and shape of the grip. This goes for sabre grip, reverse grip, etc.
The knife draws quickly. For me it's fastest using the thumbstuds since it can be carried tip-down only. The flipper works well too. The studlock is secure, strong, and easy to disengage with one hand for closing. Until the knife is broken in though, the studlock can hang up occasionally requiring two hands to close. After a hundred openings or so it's free and smooth. I love this lock design!
My only complaint is that sometimes the safety will engage itself accidentally when clipping it to my pocket. This can be avoided by carefully putting it back into the pocket. This safety works much better than the ones found on the leek and other early AO kershaws. It uses a spring/ball bearing and is much more secure and less likely to move around.
Closed, the knife measures almost 5", yet it feels small in the pocket. I however don't carrry this knife often because of the size and shape of its blade. It's just a big knife, and I prefer a smaller knife for every day tasks. That, and whipping out this huge shank to open a box in front of people is overkill. The knife looks MEAN. To me, the Spec Bump would be a very fast-deploying and effective self-defense knife. Otherwise I think there's better options for EDC.
Shame though, because it's such a sweet blade and I never carry it
