I've had a 19, a couple 23s', a 17, several 22s', a 27, a couple 21s, and a 30. All good guns, but nothing has compared to the 21SF. I have rather meaty hands, and the SF frame feels good without removing finger grooves or grip reductions. After applying a Talon grip, it's perfect. The first 10 rounds I fired at about 10 yards went in a group about 2" around, recoil was mild, and the factory trigger was great right out of the box. Now to add night sights, stock up on more mags, and a bunch of ammo. If I can find the right holster, this will be what has my back daily. I've been thinking an MTAC.