Stocks have evolved. The very worst artificial stock that I know of was Reminfton nylon 66's stock. That would/could change poi by a foot in an hour if one side got wet.
Next was Remington's attempt with their center fire stocks which reminded me of sponge rubber. Not even good for a fire. I think they have come a long way.
The artificial material used for stock that I believe in is Kevlar. I believe, but I could be wrong there's little movement with that material.
As far as wood goes, not all different woods are created equal either. Though I prefer it to all artificial materials except I think Kevlar is near equal.
