Hello. Here is my $0.02...
I have never owned a S&W but shot a few, and like them. Actually, I am looking at a couple 19s, a 13 and a 586 right now, all well used up but the price is right.
Both Colt & S&W have a long history behind them. Ruger is the new kid on the block.
To me, nothing beats the Colt SAA for ergonomics and looks. Colt has produced historical landmark handguns like the 1851 Navy, SAA, 1911 and Python. Their design blend utility and art. After the (old) Python, things went a bit downhill.
Smith & Wesson has also produced very good looking and very functional revolvers, though their look and function hasn't changed over the years and models. They found a winning design and stuck to it, I have no problem with that. When I think "combat revolver" I picture a S&W, well, maybe next to a Manurhin MR73...
Ruger on the other hand, to me, produces tools, with less consideration to aesthetics, except the Blackhawk (I have a 4-5/8 .41Mag), but that is an exception since it is of course inspired from the SAA. It is not a Single Action Army clone though, to be clear. The other models look, for lack of a better word, slightly weird... Let's just say that their design isn't "timeless" like Colt or S&W... As a tool they are excellent.
It all depends on what you want to do with your gun. If I wanted something to carry in the woods, I'd take my Blackhawk. For self defence, a S&W 357. My SAA is something I will keep for the rest of my life as a functional historical piece of art. A Colt SAA clone would serve the same function as a Blackhawk, albeit slightly less capable.
You pick the best tool for the mission and that's what you end-up with. That's why I own different brands. I can appreciate a fine revolver just as much as a Glock, another historical landmark gun. Each has a job to do, and yes, sometimes that job is just to make you happy
Gil.