The 686 is an excellent choice in an all around handgun. I have a 4 inch 586 that I have fired many thousands of rounds thru, and am very happy with the durability and accuracy. The Smith is lighter, and balances / carries better then the big Ruger, and offers a large selection of ammo from cheap practice to heavy hunting / self defence stuff. About the only reason I would look to the Super Redhawk would be if you reloaded, and were looking for a handgun for predominantly hunting big game. The .357 will kill a deer cleanly, but I like the extra juice of a .44 / .45 slug.
Larry