Juniper and incense cedar. Always with sinew. I live in Utah and California and always cut my own wood locally. I make mostly reproductions, so I use the same wood used in the real ones.
As far as I know I am the only one on this sight that uses Incense cedar. It is light .35 in the water test. When it dries it cant handle much tension but is the best compression wood I have ever used. So with a thick sinew back it takes a huge overdraw.
If you look up incense cedar on this site, all the posts are mine.