My favorite paper is the Forte Polygrade V. I print at the local Jr. College darkroom so I will guess that they use Dektol. I have noticed a difference in the Polygrade RC vs. the Polygrade Fiber with the fiber looking much better.
Another very good paper that I use is the Classic Meuseum paper from Fotoimpex. It is tripple weight fiber base graded paper. I have the grade 2, but I swear that I can get just about any grade I want out of the stuff. Both papers tone very well even when using a hardening fixer.