I've got a 4". Great lot of fun, and reduces muzzle flip greatly. With the stock wood grip, though, .357 Mag punishes your hand. Eh, maybe I'm just weak. But .38 Sp is very light and manageable. I wouldn't use it as a carry gun, but as a nightstand gun it should be reliable enough, and having the rail on the bottom means that it can have an attached light. There aren't, however, a lot of customization options out there.