I've had one of these for a couple of years and find that it works very well on most species of wood: poplar, Sitka spruce, etc. Not so well on Douglas fir. Douglas fir grain varies greatly in hardness between the spring wood and summer wood which makes it tear out badly. I use a sanding disc and "V" block to put tapers on DF.
With a sharp blade, it will perform well on most woods. Hope this helps.