If there is one coin trick that I do, its Ron Bauer's handling of Gadabout Coins Revisited.
His handling is the one to learn as in the last phase, you don't have 3 coins all going into the pocket at the same time.
You can successfully place 1 coin in the pocket without much noise (as there is already a coin in the pocket)...but there are some refinements on how you can handle the last 2 in RB's handling
I can't emphasize enough how strong this trick is as well as the "intellectual battle of wits" that goes on between the audience and the performer. I've seen Ron perform this effect and his close-up work is amazing. He has a deep knowledge in magic and whenever someone asks to see a trick, this is one of his main performance pieces. In a world of coin magic where there isn't much presentation, this effect delivers.
(After all how many 1 coin routines can you really do
Andy
Coin Magic Tricks Blog