My favorite way is a variation of the thumb opening. I slide the tip of my thumb (the nail, ratherly) in the hole and I extend my thumb quickly. The knife opens like an auto. Sometimes I do the drop or the wrist flick. On compression locks (and Phantom lock™<img src="wink.gif" width=15 height=15 align=middle border=0> I sometimes disengage the lock with the finger and shake the knife open (and closed as well). <img src="wink.gif" width=15 height=15 align=middle border=0> Also, sometimes I use the ring finger to open the knife in the reversed grip.