I am a long time user of D'Addario, Ernie Ball, Roto Sound, and etc., and I only had a chance to try Elixirs 10-52 for dropped C tuning 2 months ago and I was blown away.
The hype is real!
2 months and still running, the strings still sound fresh and bright/twangy/djenty(or whatever you call it).
It still has no signs of rust or roughness especially on the higher strings.
They say Elixir strings have flakes on the strings on the picking part when it goes on, yes it is, but it doesn't bother me, I think that's the coating/treatment applied by Elixir.
Overall, Elixir is great investment for your guitars, for twice the price but lasts 3-4x than other brands, it's definitely worth it.