1. Winged Elm - produced my strongest, fastest bow to date.... 70lb. draw @ 29", 64" ntn, zero set, and shoots fast as hell. Once heat treated, winged elm is as good as it gets.
2. Hickory - tough, durable bows that won't break... one of the woods I would use if I were making a bow for someone else. It is a little harder to work than the elm, or I might have rated it number 1.
3. White Oak - if you heat treat it, it makes a fine bow - steam/heat bends easily.
4. Pecan - like hickory but not quite as hard to work.
5. Osage Orange - I would rate it higher if I enjoyed chasing rings!
6. Hackberry - I would choose hackberry if I were making a recurve - you can steam bend it real easy and it makes a good bow.
7. Red Oak - will do in a pinch. I have made some red oak bows from staves that I was right proud of.
8. Persimmon - I made a bow from it.... shot good till it blew up! I think I got it too dry and it seemed brittle to me. I have seen good looking persimmon bows posted on here, so it was probably my misuse of the wood that caused the explosion, which was quite spectacular.
9. Sassafrass - it smells great and will make a bow, but mine took a lot of set.
10. Honey Locust - will make a bow and the wood is beautiful, but I think you have to overbuild, since it is sort of weird, brittle wood.
That's my order of preference on the types of wood that I have tried so far....