Both!
As much as a enjoy my Model 17 (basically a 6" Model 18), I might lean more towards the Woodsman; as others have said, they are getting rarer, even more so than the Model 18. As I said, get both if at all possible.
As for which will burn ammo faster, it depends. If you preload all the mags, then the Woodsman wins out. But if you are going through a couple hundred rounds, the revolver will win be faster as you don't a magazine that is slow to reload.