I use the Warmtone but only for portraits. I find it a bit odd in that the warm tone seems to be achieved by adding a dye to the inkjet coating, and I suspect there's still some OBA present. It can work really well for portraits but I don't like it at all for B&W. I print a lot of B&W and my favourite paper for this is the H by HM Gloss Baryta. Yes, it has OBA but it does quite well in the Aardenburg testing - much better than the EEF.