You might want to tell it in english if it has a fancy name,so I can understand.
Mine is a phoenix-eye to temple.
Round/Front kick to the kneecap. It works, and its hard to defend against. Simple, effective, crippling.
Roundhouse kick - its bewdiful, and it has won me enough fights to have confidence in it.
good olā right hand hook - gets the job done
Front kick to the kneecap.
pak sao punch kick to knee combo
A hard,quick,fast right hook punch to the side of the temple.
A direct front thrust kick to the sternum
Left leg roundhouse - I usually fight southpaw, so thatās the rear leg for me, and my straight punch - either straight right or straight left, depending on my lead. Theyāre both about equal in strength.
The good old fashioned right cross. 
Maybe its got to do with a lifetime of only playing every raquet sport under the sun building up my right arm, but its as though iāve been training this punch all my life.
Back choke. Iāve won more fights with this than anything else.
Downwards arching claw to either clear the way or distract there hands then strait punch right into the middle of the chest. Suprisingly VERY effective. You must get the arch right on the initial movement though.
groin ripping reap throw.
or just a peng chuan right down the center.
At least thatās this weeks favorites. They work for me.
The technique that LSW is doing in my avatar pic, used as a takedown, with the leading leg behind the opponentsā leg, and the leading arm coming down across the neck or collarbone. Close second is the hook the front foot and sort of a right or left hook to the temple simultaneously.
-Golden Arms-
Side kick or roundhouse kick (ether leg).
I donāt know about favorite, but phoenix eye to the temple is my trusted last resort.
Series of techniques
F.C.,
Sorry, I believe that you are meaning to say what series of techniques?
If you are only meaning one technique, then you better be able to knock out your opponent with that one technique and you better do it fast or hope that he is a slow learner and that he doesnāt pick up on that one technique.
Standing still.
Most confident technique? Donāt get into a fight, less chance of getting killed.
Mine.
Doing the 200 metres sprint after hiding behind a wall of smelly brown stuff. 
Just kidding.
Sorry, no āmostā confident technique here.
Whichever one they give me.
hmm, step-in cross-punch.. and the good old elbow-straight-knee combo. I like alot of tecās