LJ: Ruger triggers are known for being creepy and heavy, so is their 2 ton hammer fall but not to worry, there are plenty of spring kits available to help lighten up the trigger pull. The hammer fall you will just have to deal with. Either of the two revolvers you identified are very accurate with all types of loads and bullets and are preferred by many of the shooters who frequent this web-site.
As mentioned, both revolvers, the 45 Colt and the 44 magnum are very accurate. They are both redhawks and scope mounts are readily available for that model.
The ruger is supposed to be a stronger action than the Smith and Wesson however, not too awful long ago Smith and Wesson refined their Model 29 (44 magnum) revolvers internally to handle a more continued diet of heavy magnum loads and are supposed to be able to shoot them all day long. Some of the older S&Ws do not carry these internal refinements and may not hold up to that kind of battering but the newer ones are supposed to.
With that in mind, and preferring the feel and handling of the S&W over that of the ruger, my particular preference would be for the Smith and Wesson - but, since I've already sent one 6.5 incher back to S&W for 'shortening', I would probably buy the S&W, then send it back to have the barrel cut back to 5 or 5.5 inches and then shoot the darn thing until I die. HTH. Mikey.