...for me. Seems like the Gen4 G21 has hit everything right. The slim sf frame, the improved-traction grip texture, larger mag release, the new recoil spring, and hopefully if the trend continues, the older slick black finish. I wouldn't change a thing, except the price of .45 caliber ammo... My new gen 4 G23 is close, but it has the dull matte finish, and I don't like the cheap feeling grip panel I have to add to make it match the older gen 3 size, which has always been perfect for me. My gen 3 9mm pistols are closer to perfection (including reliability here) than their gen 4 counterparts, and you don't really need the rougher texture grip on a 9mm. The Gen4 G21 is not perfect for everything, as I can't conceal a gun that big, but for the range and home defense.... I say..."Perfection".