Toast some two row, or if you can get buiscuit,victory.Golden Promise is your best bet if you can get that. Im a fan of brown malt especially in dark beers.There is amber malt too which is basically toasted malt i think. I think they are all different though really so there is no real sub just some similarites that create a different subtle character. If you compared them side by side you probably would see the difference.It may be harder to notice a difference anyway in a stout though maybe. Its the same way as different crystal malts-they have differences. Like carahell compared to crystal 15-20 or something. I think i preferr the belgian crystal malts going by the beers ive tried that have used them.