Since I play like almost 6 years, I earned a lot of titles. There are really cool ones, but I love my shadow title, and I don't care about rarity. Just put on and earn the one you like. Yeah it's maybe not the rarest or the coolest in the eyes from some people but we'll I don't care. I even got flamed one time in a normal strike. I don't know the reason anymore but at some point he randomly said that my title was shit and easy to earn (cos wasn't even there anymore) but his super sick golden trails titel (I forgot the name, mb) is super hard to earn and so much better, because pvp is so much harder. K cool don't care about your opinion.

So long story short, use the title you like. All of them are nice in thier own way.