Can,t beat them for snagfree draw and keeping crud out of the action. The most popular my guess would be the 642,442. Then for those who like the lite Sc 340pd and those who like stainless ,more weight and controll the 640. Any will work ,but what works best for you? What in Ammo38 +P for the 642,442 and in 357mag for the 340pd,640 do you favor?