I think you have to be more specific. To me, a traditional N-frame with a tapered barrel like the 1950 Target is vastly better looking than any Trooper but a nice New Service Target is a work of art compared to a plain vanilla 686. For the most part, I think older S&W's are better looking. I think the Python and Diamondback are handsome revolvers but far from the top of my list.
The Single Action Army, 1851 and 1860 out-look all of them.