I actually like the one in Miami...
Well, it isn't an RCC anymore, but I get into it free by showing my DC credit card.
They (Club America???) now offer FREE Wi-Fi internet, FREE OPEN BAR with a bartender, FREE high-end snacks, more comfortable seating, new carpeting...
My point is that the same facility, when run by someone other than RCC, is now excellent.
Worst clubs domestically are Atlanta and Denver -- Both too small for the number of passengers.
Best current RCC club of course is SFO!