I am interested in buying a .357mag with a 4 inch barrel. I can't decide whether I want a S&W 686 or a Ruger GP100. The price difference at my local gun shop is about $200, with the Ruger being the less expensive of the two. Is it worth the extra $200 for the S&W, or am I paying for the name? What would be the pros and cons of the two? And is there another .357 that I should be considering? Thanks!