I have a hard time finding good descriptions of the various tobacco flavors. I can't tell you which is sweeter or which is more ashy. I love the RY1 from Hangsen, it's got a dry feeling in the mouth. Add your other components and it would probably make a killer RY4.
I like the Hangsen RY4 too, it's terrific! Doctor it up a little with your other components.
Thanks for the link Boomer!