I have had S&W 29s and got rid of them. Not as rugged as a Ruger. My first SBH I bought in the late 70's, 7.5" bbl, and had it cut and crowned at 5.5". I have done that to more than one. I like the 7.5" cut down better because I get the non fluted cylinder and the Dragoon grip. Don't know much about the D/A Rugers I just like the single actions better. The 5.5" bbl seems to to have better balance and points so much better.
And never an 8-inch barrel!
Denis