I tried to do a search on this topic but I came up empty handed. I am going to be purchasing a 30 in the near future. My only minor hold up is this.... What, if any difference is there in the Glock Night Sights vs. the trijicon brand night sights??? I see that the trijicon brand is about $20.00 more than the Glock brand. Is there any distinct difference or advantage to either or does it just come down to preference?? Thnx much in advance!