which papers go well with the Epson HD XP 15000 for b/w images?

The XP-15000 prints well on both glossy and matte papers- for black and white I would first recommend the Juniper Baryta or Slickrock Pearl for a glossier surface, and also the Entrada Rag Bright or Entrada Rag Textured for matte papers. All print well on your printer.