I went through a .357 Sig phase a few years ago while teaching at our local police academy (our state narcotics agency had made the change and the highway patrol was looking at changing from .40 S&W, which they eventually did). I had a Sig 229, Glock 32, and a Beretta 96 with an aftermarket barrel (can't remember the brand). The guns were accurate and easy to shoot; subjectively the Sig and Beretta felt the best. The Glock seemed too light for the round.
One thing about the .357 Sig, it's LOUD! Everyone at the range knows when you light one off.