To each their own but I would rather pay for, carry/use and possibly wear out two 629's than one redhawk.
The Smith is superior in every way except durability. The durability of the Redhawk is something I doubt that 99 percent of their owners would ever put to test. Same can be said of the 629.
I guess that depends on what you do with your .44s. If punching paper is the extent of your activity, there is no reason to load heavy, but if you hunt, it doesn't take a whole lot to beat up a 29/629.
