I have a three inch models 65, 66 and a 686 CS-1. I find a 66 three inch the most useful. Its small enough to carry off duty in any weather ( in a proper hoslter it hides great under a T-Shirt. Its good enough for recreational target shooting out to 50 yars with quality 38WC ammo. I can loaded with std 38Match WC or Std 38's or 38's or +P or +p+ or Med.Vel Remington 125 357 magnums or full power magnums. Its a great outdoors gun loaded with full power 158 .357's. I would not feel naked with it even on duty ( woth 3-4 speedloaders on my belt) since I shoot a revolver better than 99% of the Department shoot their Glocks. The is just not much that a good Three inch model 66 will not do. In my safe that one is the winner. A VERY close second is my CS-1, its just heavier. A third would be my Jovino 3" model 629-1. I can have it loaded with anything form mild 44 specials all the way up to 240grain 44 magnum. It has a full extractor. It hides well under a lose shirt in hot weather.