Teak and Bobinga are great woods to work with. I've used both on cabinets and furniture I have made. As with 90 % of the differant woods out there, If you properly treat them then you will have no problem with them in your bed. The biggest reason you don't see more exotic woods in the beds of trucks is because of the price. I'm thinking about either Zebra wood or Purple Heartwood for my project truck. Follow this link to see some differant woods.
http://www.gilmerwood.com/Gilmerwood...e%20Images.htm