Based on your criteria...
...another must have revolver to own -- to shoot -- not just to admire, although there's nothing wrong with beauty. Centerfire only, DA or SA, smooth action, accurate, 4-8" barrel, a pleasure to shoot, well, like the Colt Python. And to top it off, something that might even appreciate in value...
My choices would be, in order of preference:
Smith & Wesson model 27 with 3.5 inch barrel.
Smith & Wesson model 19 with 4 inch barrel.
Smith & Wesson model 19 with 2.5 inch barrel.
(All these would be the old style, pinned barrel and recessed chambers type.)
Colt Single Action Army in .45 Colt.
Ruger Blackhawk or Super Blackhawk, preferably a flat top. I'd prefer the .44 caliber, but I just found and bought a .357.
The Ruger 'small' .44 Magnum - without the dragoon trigger guard.
Good replica of Colt SAA in .45 Colt. (I've seen the Beretta Stampede and it looks really nice.)
All these have classy lines; all are good shooters and fun to shoot - as long as you don't feel the need to constantly shoot earthquake loads - and they will all appreciate in value if you keep them up.