I'd say that the NRT lounges previously stood out ahead of other lounges, however with some of the 'flagship' lounges now at ATL and JFK as well as others having the enhanced food/buffet options it has become less clear.
In my opinion... softdrink selection in NRT is better than other clubs with a wide variety. Beer is good with the two auto pour machines, plus sake and wines. Hard liquor is fair/poor selection. I've seen the food improve over the past year or two at NRT with different offerings now in addition to the sushi and soups. A few weeks ago I saw edamame, sushi, teriyaki, tofu rice roll, and some other things.