I recently bought a SIG P229 Legion, 9mm and have now shot about 250 rounds through it, including a competition match. Being a diehard Glock fan, I was skeptical about the double action trigger pull for the first shot. My very first handgun was a P226 and I never could get used to the transition, but that was 11 years ago and I've trained a lot and practiced a lot since then.
SIG has done an outstanding job with this gun. First, the trigger. The Gray Guns double action is so smooth and lighter than normal, that at first, I was breaking shots before I wanted to. But once I got used to it, no problem. As for the single action trigger, all I can say is...WOW!
Probably my favorite part of the pistol is the grips. Not sure what they are called, but they are thinner in profile and provide a much better purchase on the gun, than standard SIG grips. The checkering is perfect and the checkering on the front strap and under the trigger guard is very well done. I'm a big fan of 1 handed shooting, so the grip texture and shape is important, especially when running the gun hard one handed.
SIG also provides excellent sights. My favorite sight color is green and the green front sight jumps right up where it should be, but it's not too big. For long distance shooting, 50+ yards, it doesn't cover too much of the target. The rear sights have tritium but the still direct my eyes to the front sight. Well done.
The beavertail is not a full beavertail like on some of SIG's pistols, but gives me the ability to get a nice high grip for good recoil control.
I used to be against the high bore axis of pistols like this and still don't like some. But SIG has somehow taken that factor out of the equation for me, as I find that with the Legion series, I don't experience as much muzzle flip as with others.
Now, as far as accuracy, outstanding. I did a range review video of an accuracy test, you can see it here.
This is an outstanding pistol and worth the money. If you took a regular SIG and did all of the upgrades, it would probably cost you more.
By the way, I don't represent SIG.