Complete refinish and everything was $250. Took about 4 weeks turn around. May seem a little high - but that model had some sentimental attachment to it. It was like new when I got it back.
I can't say as I have had problems with the D frame Colts. Both my Detective Specials have had around 5000 rounds put through them and are still as mechanically sound as can be. I don't shoot +P ammo in them as they were not rated for that. My Police Positive has had untold rounds put through it, was used when I got it and like my two DS, it is a great shooter.
I have been shooting Colts revolvers since the late 70s and have had very few problems. I just don't see them having that much of a timing issue unless they are abused.
My only concern with a Colt DA is the availability of parts getting scarce at some point. But as far as buying, carrying or shooting one today - not a concern.
The S&W J frame in stainless is an easier gun to keep, and the Ruger is a war horse no doubt. I wouldn't sell the Colts short. They were premium revolvers in their day.
In fact when I started my career as an LEO - a lot of departments required their officers to furnish their own weapons. Guidelines of the day were pretty strict and generally read the same, you had to have a .38 or .357, four inch barrel, Colt or Smith & Wesson. Nothing else was allowed. Guidelines for detective's firearms, off duty carry, and back-up weapons were more relaxed - still, most carried 2 inch versions of the full size duty weapons.