It's my main paper, I still have quite a bit left from the last production run.

I make up my own ID-78 which was an Ilford powdered PQ warmtone developer pre-dating Ilford Multigrade Warmtone by quite a few years. Ilford Multigrade Warmtone developer or Agfa Neutol WA give similar results.

It's a very flexible paper, you can vary the warmth significantly with exposure & development time, I keep development to a minimum to maximise warmth.