My fave is Qatar Airways in Doha, but not the one they have right now in the terminal shared with all travelers; I'm referring to the special premium terminal reserved exclusively for J and F. I traveled through there in January 2013 and much to my disappointment, it was closed in October 2014 when I passed through in Qatar J class again. I only booked Qatar because of that terminal. Tremendous let down; the current lounge is nothing like the F/J lounge in that designated terminal. No idea when (or even if) that special terminal will open up again.