Owned 3 striders (2 smfs and an sj75) 4 crk sebenzas, a benchmade lfti, a boker pipsqueak, a boker epicenter, and a kershaw tilt. Ive handled an 0550, two 0560s, two other 030xs, a couple of protech tr3s (couple of standard production, a prototype and a custom damascus one), a bradley alias 2, several benchmade subrosas, a boker ceramic anti mc folder, a couple of dpx hest 2.0s, about 10 other sebenzas (2 large annuals), a dozier custom, a boker subcom titan, and probably more that I'm forgetting. The 030X from what ive seen disengages the smoothest and has the tightest lock up. Someones going to give me shit for saying this, but yes, if I really try, Ive been able to feel the lock FLEX (no bladeplay whatsoever) on just about any sebenza I've owned. and some have had sticky locks (not like anything a production knife would have, but there was some friction when I disengaged the lock). Just about all the other ones ive either been able to feel a little up and down play, or it had a sticky lock. The 030x has neiter.