All of them
That said, if I had to choose, which thankfully I don't have too, it would be between my M617, M21, and M627 pro with an additional 9mm cylinder.
The M617 squeaks by for the win. Mine is a 10 shot 4 " gun with a superb trigger, laser like accuracy and for me balances well. This is one gun I'll hand down to my grandsons.
I enjoy all my revolvers, shooting them in ICORE, USPSA, IDPA.