I'm going to be picking up my first Glock (G19) next week under the LEO/Security discount program. I've decided I'd like to get night sights right off the bat cause I know I'll just want ot get them later. I can either get Glock NS or Trijicon NS. The Trijicons are $22 more. I know Trijicons are good sights, but how do the Glock NS compare? Is their any advantage in getting the Trijicons over the Glock sights? Or should I just save the $22 and get the Glock sights. Thanks!