Since the NH lounge opened at the 40s gate, I stopped using the UA RCC. Sure the showers are better in the RCC but NH has sushi (2 kinds), Udon/Soba, Soup, and way more computers than the RCC. I tend not to travel with my laptop so the computers are key to me.
Next time I will try the 50s lounge, but the 40s are good enough for me