I perfer the Meprolights, I think they are a better sight picture in day light, but all the brands agre good and about the same in low light. YES, you need to have a profesional install, the specialized tool cost triple what it will cost to have someone with the tool do it for you, and trying it with a hammer or press can break the glass viles full of glowy gas in the sights and then the sights are garbage.Which ones are the best? I have looked at the Trijicons. Any others to consider? Also, should I get a professional to install?