They are basically the same gun, so what others have said rings true, go with what trips your trigger. I went thru the same quandary myself several years ago before I bought my 686. Since I had a Ruger 44 magnum before which tore my wrist up everytime I shot it, I went for the 6'' ported 357......and have never looked back. My youngest has shot full house 357 loads thru it since he was 8 and my wife also enjoys shooting it, mainly because of the light recoil. Some say they don't like the flash and blast from a ported gun, but it has never bothered me. As a matter of fact my next gun will be a ported 44, either a 629, or the PC light compensated hunter. I believe the reason there's no hi-viz sights on the ported model is because the port is directly in front of the sight and the blast would either break it or burn it.
