Yes, get one: the best $30 you'll ever spend! My .30-'06 came with one from the factory, my buddy's had a plastic butt plate. Absolutely no comparison in recoil when shooting them side-by-side.

There are enough other brands out there that your head can spin pretty quickly if you want to try to compare them all. I can assure you, though, that the Sims works, and works well.

Good luck,

FC