Resin coated paper does tone well, but be aware that different papers give different results. The emulsion is the top layer for all papers, so the carrier makes no difference to the toning action, although brighteners and reflection factors may effect the look. All papers should be correctly washed, and fixed prior to toning. Certain toners, selenium, and gold, for example, are recognised as archival. Ilford recently stated that both r/c and fibre were good for in excess of 50 years. So experiment, and enjoy.