As previously stated, the DA trigger is not as smooth (and can not be made as smooth) as a S&W or Colt Python. As it was explained to me, it’s because it’s a “stacking action.” That said, it don’t “suck.” If you want a Python action, pay $1K or more for one. Also, I actually prefer the DW cylinder latch over S&W and Colt for ease of use with a speedloader in competition. Personal preference is subjective.
I’ve had the action smoothed in my 715 and a Wolff (yes, they still offer the parts in their catalog) reduced power spring kit installed. Still, it’s not as slick as the S&W 19, 28, and 586 I’ve had the same work performed on by the same gunsmith.
If you’re looking for a very stout revolver in .357 magnum for SA (or even DA, I’ve used mine in IDPA and been quite happy with it), you can’t find better for the money. DW revolvers have been very underrated because of some quality issues (guns made in Palmer, not the Monson ones from what I hear) but I’ve had no problems with mine. CZ/DW Customer Service has been great too. Keep in mind that the barrels are still available and make a Model 15/715 a versatile choice for revolver folks.
If you find a Monson Model 15 for $300 or less, jump on it. You’ll never be sorry.
Matt