The B/C US Airways Club is larger and nicer. I can imagine that it gets pretty busy at certain points and that it might be tough to score drinks. It's not too much of a pain to walk there.

The A Club is quite nice but is a pretty ridiculous walk if you're flying out of D. I've only been over there when I did a Tour de Lounge but can't find the motivation to walk over there.

I still find myself hitting the United Club more often. I just need to grab a drink and some munchies before a flight without too much hassle. There are a lot of power outlets around to top off the power on your devices which is a plus. I suppose if the bathroom closure persists, I'll be heading over to the US Club though.