I can't say which is "better", but in deciding between .44 mag DA's, here was my reasoning in picking what I picked....
Buffalo Bore says no to the S&W using their heaviest loads while Colt and Ruger get the ok... I wanted a work gun, not a range queen. S&W is very pretty, but not stout enough for what I wanted. I'm a handloader though, and that played a large part in my decision to pass by the S&W. If I were to stick with factory ammo only, there is no reason I wouldn't pick the S&W.
Colt...again, I wanted a work gun, a field gun....I didn't want to worry about collectors value while out in the rain and mud. I also didn't like that the colt was literally 2x the price of the Ruger.
The Ruger Super Redhawk is UGLY. No doubt about that. At only $600 I wasn't going to stress out about the finish or scratches while I was out hunting, it will never be collectible. It is able to take scope rings without being drilled and tapped, and it holds a very respectable group.
I wanted a pure working gun though, if strength, durability, and functionality weren't my top requirements, I might have very well gone another direction.
Sorry I don't have direct experience with all three.