Thumbs UP for SIG's Factory Sights
I like the factory sights on my P229/.40 better than any three-dot daylight combination I've used. I also prefer them to the white "U" style rear sight marking. Front sight acquisition is rapid, and as the rear sight comes into final alignment, there is less distraction. The single, centered bar (actually more of a square) draws the shooter's attention immediately to the center of the rear sight. I found with three-dot systems that my eyes had a tendency to wander back and forth between the two rear sight dots, especially when I was becoming fatigued.