First off, I prefer a Selway slide on bow quiver on my longbows.
Re wood vs carbon. Carbon is more durable than the softwoods like cedar, spruce and fir, but hardwoods like birch, maple, ash, hickory and a few others give carbon a run for their money in durability.
Very little difference between tapered woodies and parallel. Tapering takes about 20-30 grains off the tail end of the arrow, adding about 1% FOC. Arrows will recover/straighten just a little faster if tapered, but not enough so most would notice. I shoot both.
Wood arrows are plenty consistent and accurate. If well made, and correctly matched to the bow, they're every bit as accurate as carbons, and usually quieter. I could go on, but you get the picture. Shoot what appeals to you.