I shoot Doug Fir's almost exclusively. Prefer them for their grain quality, and being tougher than spruce or cedar ( I break a good few stump shooting).
Once in a while, I try some sitka spruce, to keep the arrow weight down to 10 gpp, but prefer the arrow flight and strength of the fir.
Cedar has some good qualities, but again, doesn't seem to hold up as well when banged around.
Tried a set or two of tapered shafts; can't say I noticed a difference in how they shot. They reduced shaft weight around 25 grains or so on the firs I had tapered, which got me to the shaft weight I was looking for.