Hi, I'm trying to decide what kind of rod I should get for my G21 and G23. The only mod is the 3.5 connector. I use the G23 for carry and G21 for home/vehicle defense and once a while I carry it too. I hear all this stuff about the SS rod is 3 times heavier and the tungsten even more than that. I'm liking the SS because of the price but I wonder if it really helps with muzzle flip? I hear both sides of this story. I also wonder about the tungsten guide rod regarding durability and muzzle flip as well. Can owners of each type of rod give me some feedback please? The good and the bad. Thanks.