"define best? best in your opinion? best in locking? best in looking? best in function? best in what?"
I haven't read all of the posts here yet but I wanted to thank Sergeua for starting this thread and for the videos. So . . . thank you.
Up until now I have been a push the release and let it drop kind of Spyderco closer.
I am no where as smooth as you Sergeua but I am doin' it.
I could see myself getting cut if I did this at work while not paying attention. I need to develop a pause to get the fingers out of the way even though it is true the blade can be stopped safely partway closed.
In USE I am a BIG fan of lock backs because the area where I grip the knife up near the pivot can be very clean and consistently shaped (no dips or metal bars and tabs and slots on one side). In addition, many of the knives I gravitate toward for other reasons just happen to be lock backs.
I intended to post another photo but potobucket is F-ed right now so maybe later.
Here is an old photo that I posted here long ago showing one of the reasons why I like this Boker Ti handled knife so much. Easy to close similar to the Spyderco technique. Bandage and all.
This Boker and my Spydercos are the only ones of my many lock backs I can do this with and I really appreciate the option.