So i've been hearing the KVT technology being mentioned a lot recently, which if i'm not mistaken is some sort of bearing system. I know the 0560 and the tilt use KVT but what other knives have this tech? I'm interested in trying it out but i don't have the money for a 0560 right now, do any of the less expensive offerings use it? Also, how good is it? does it really make a noticeable difference or is it just kind of gimmicky?