I used to buy the Elixirs due to their long durability and great sound but I always thought they were a little to expensive. And here is the end of my worries. :) The daddario EXP 115 (or any other gauge you might prefer) sound as good as the elixirs but cost you less! I have alllready bought them again (and will buy them again of course).
Compared to EXL 115 I'd say these strings deliver more balanced sound, a bit more bottom, a bit less less mids. I tried them on hollowbody Gretsches. Other thing is about feeling, they are smooth to play, you can feel the difference with yo fingers. Can't say how long they'r gonna keep the sound, I don't play much.