Gp100
In my opinion, the GP100 is best revolver ever made. It is the most durable, most reliable DA .357 magnum ever made. In my opinion, it is also the most comfortable to shoot. What it lacks in style it makes up in strength.
While they aren't as refined as some other revolvers on the market when it comes to finish and trigger, both of these deficiencies can easily be overcome with a little work. It is possible to improve the GP100's deficiencies to make it comparable to competition in the areas of trigger pull and finish, but you'll never get a Smith or a Colt to the GP100s strength or reliability.
I've never heard of a GP100 going out of time. Nor have I heard of an ejector rod bending or unscrewing. This is saying something because people usually buy GP100s to shoot heavy .357 magnum loads. A GP100 is a no nonsense gun, and in my opinion is the best DA Revolver design ever conceived. Ruger's QC isn't always the best, but if you find a good specimen, you'll have a gun that you can truly depend on and pass on to your children's children.
It's solid frame, triple locking cylinder, it's front site, it's modular design, and it's grips make it the best DA design.
For SA revolvers, Freedom Arms are the best. Rugers are the second best SA designs.