I use the GRU RCC frequently. It is definitely frayed at the edges, but no more so than IAD. The food and beverages are definitely a step above anything in the US (RCC that is). Oh, don't forget the old RCC at LHR, that one was frayed at the edges AND the food sucked!
Favorite lounge in the world, for me anyway, continues to be the Koru Club in SYD; stunning views of Botany Bay, hot showers, great food, and huge. ^
Worst lounge in the world? The little box in BOM that fills to the gills prior to the 3AM departures (yawn); warm beer and no carpets.
Yeah, you can do a whole lot worse than the GRU RCC...
