You know, if you pose a question to ten shooters, there's a possibility you're going to get ten completely different answers!
In this case, though, if I was going to pick the perfect .357 for myself, and money was no object, I'd go with the 3" Model 66. Why? Full length ejector rod, stainless because it resists corrosion better than blued, and, adjustable sights. I'd like to be able to zero it to the load I'm shooting. I used the "if money was no object" caveat, because those I've seen were somewhat out of my price range. I should have bought one years ago!
Right now, I have a 2.5" 19-5(the 2.5" Model 19 was my grail gun when I was a kid), and I carry it occasionally. My EDC is a Colt Detective Special, also blued. When you carry a blued handgun all the time, you should really get used to cleaning it all the time. It's my laziness that would make me want stainless!