My favorite FB paper of the moment is Cachet (Maco) Expo graded. It's just slightly on the warm side, tones and bleaches well, holds shadow detail very nicely, and has rich blacks. You can order it in the U.S. from freestylecamera.com.
Galerie graded has more brilliant whites, so I use it occasionally. I also like Oriental Seagull graded. For prints that do better with split-grade technique or that require some contrast grade I don't have, I use Ilford MGIV FB.
Azo for LF contact prints.
Ilford MGIV RC Portfolio, when I want an RC paper, usually for small snapshots that I give away unmounted.
Ilford MGIV RC glossy for proof sheets.