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.
Heavy kicking loads are more abusive to the hand in a S&W. The Redhawk handles heavy recoil better.