I am afraid I quite like American Airlines Flagship JFK lounge in T8. When there's a decent thunderstorm on it's wicked - great vista. As someone who doesn't drink alcohol, I also appreciate their choice of beverages, as well as the sushi they put on in the evening.
However last week I had a sneak look at Cathay new First lounge in Hong Kong, and I suspect my views will change in a few months.
Oh and the full double bed in the Amman RJ lounge (USD 50 fee) tends to put all other cabanas in the shade.
Hon. Mensh to Qantas First in SYD and the Melbourne lounge too.