My AD17e came with Elixir PB Mediums.
I tried the D'Addario PB mediums and they were good, but a bit brighter sounding.
So my current set are Elixir PB medium-lights which I really like. The lighter treble strings are easier for me to play and they balance the sound more to let the bass and mid-range shine as well.
I haven't tried many yet, but so far, these are my favorites.
I do have a set of Martin medium PBs which I will try next, but that won't be for a couple of months, since the Elixirs last quite a while.