I agree, all CLs are good in their own way. With that said, having stayed CL at WL, GF (both RPC & SL), Poly and BWI, I loved them all for different reasons (with the exception of GF SL, didn't care for the lounge/atmosphere). The others, however, were amazing!
GF RPC
- large, spacious/comfortable lounge that overlooks the lobby
- friendly CL CMs
- lots of windows with beautiful views of the grounds
- variety of food offerings
BWI CL
- small lounge, but quaint/quiet/comfortable
- very friendly/personable CL CMs
- good food offerings
WL CL
- spacious, spread out lounge that overlooks the beautiful lobby
- friendly CL CMs
- plentiful food offerings
It's hard for me to choose a favorite, but if I HAD to, BWI and Poly would be tied at the very top. The Poly is my favorite resort overall and BWI blew me away. We've had nice, friendly CMs at all the CLs we've tried, but I'd have to say that BWI was the best as far as CMs (followed very closely by Poly). Good luck!