Have a SIG P229 with Bar-Sto barrel in .357SIG, and had an M&P in same caliber as well as a converted 4006.
This also is fast becoming a favorite of mine since it gives you +P+ velocities in a piece designed to take it.
The P229 is my favorite if the lot since its scary accurate and damned dependable. The M&P was a good piece as well, I just don't like plastic. And the 4006, well I had a local FBI guy offer me way too much money to pass it up.
And just so you know, outta the 4006, the .357SIG is a real kitten!
Dale

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"Long live the S&W 3rd. Gen.!"