Personally, I don't think wood of any sort is a good idea, splinters in lips and gums are bad, but big splinters in the gut can be expensive.
My mum has a Miniature Poodle... yes a MINI Poodle who can chew through a large breed kong in 10 seconds flat.
I bought him a giant solid rubber bone once and that lasted him about a month. It was smooth... no bumps or nobbly bits for him to catch his teeth on and get a better grip for destroying.
Cheap alternatives for serial destroyers are coke bottles with the lids and rings removed. just pop in some dry food and let them toss them around and chew them. Free if you drink soft drink anyway.