Kodak branded Mic-X is gone, but you can easily get the same formula (well, probably, but I don't think this one is a big secret) if you're so inclined:
I didn't have much use for it with old films and even less with new ones but as always YMMV. The similar Ilford product would be Perceptol, still available.
Warm papers - Ilford MGWT FB is one of the finest papers I have ever used. It's not "brown" without toning but tones exceptionally well. I develop it in Ilford WT developer and tone lightly in dilute brown toner. Works beautifully.