Someone posted a F in progress a few days ago with a fir top. I searched around on the net and found a few postings in various forums (one on MIMF that discusses a few alternatives) that were fairly positive. I also noticed it is common as a tonewood for harps and pianos. Is tonewood choice largely just traditional? I have heard about the different tones of redwood, cedar and mahogany and I understand that because they are vastly different from each other. Doug fir is not very different from spruce, IMO (sorting mixed scraps would be tough). Doug fir is readily available in tight grained clear boards, while the commercial grade cedar and spruce is often quite knotty. I know I could special order better stock, but for someone who is still learning and screws up some tops (and has a penchant for experimentation) a cheaper alternative would be nice. Anyway, any others have experience with fir?