The top lounges that I've been in:
-MEL QF F lounge: Great free massages in a relaxing massage room that makes you feel like you're anywhere but an airport and a great overall lounge.
-FRA LH FCT: Private rooms, great booze, great shower rooms, you can order kosher food, and of course the Porsche ride to the plane.
-HKG CX F Pier Lounge: Preferred it to the Wing lounge, but both are great. Kosher Hermolis meals can be ordered. Great shower rooms.
-MUC LH F lounge: Very nice lounge but the kosher meals are radioactive. Luxury car ride to plane is nice.
-ZRH LX F lounge: Large beautiful lounge, not sure about kosher food, but sure liked the escort past security.
-IAH Term E CO PC: I still get a kick out of getting my clothes ironed while I shower and love the huge airy feel of this lounge, especially the lack of crowds on the 3rd floor.