i really love the look you get from gouache. very graphic and very saturated. heres a 30 minute gouache demo i did at otis 2 weeks ago.
nathan ota swung me some acryla-gouache. i never heard of this, so i couldn't wait to give it a try. almost the same look, but with a different finish.
also, i recently released a limited edition stuff print. i have 9 left. if interested it's available at my store.