I'd recommend the Bergger warmtone paper (VCCB). It takes toners very nicely, and responds to different developers very nicely as well. For a cooltone look, I'd use Ansco 130, since Ilford has discontinued their cooltone paper developer (which was a terrific product). Failing that, Dektol and a mandatory selenium toning to get rid of the greenish tint Dektol can cause.