After a 10 year gap I found myself with 3 AUH flights in the past month. Etihad's schedule is convenient and the 787s are fine. Going via Doha for One World is not simple and the transfer to/from DXB is a pain and eats into time.
EY has been a nice surprise and you get chauffer transfers within the UAE if you have anything other than the lowest fare bucket for Business.
I used to be a very frequent user of BA72/73 on this route (flight usually carried on to Muscat) but I guess things have moved on.