Any of them, properly installed will be equally accurate. But accuracy isn't the same as consistency. A wood stock can be just as accurate, but even the best of them will have the POI change as environmental conditions and altitude change. The rifle will usually still shoot the same group size, but that group could well be impacting somewhere else on the target.
If you stay in the same geographic area where you don't see huge swings in temperature and humidity you may never notice. The dry desert air in the SW for example.
Laminated wood is tougher and resists breakage better than solid wood. It is also more stable and less likely to change POI. It is also one of the least expensive options. But it's downside is excessive weight. Not a good choice on a hunting rifle where weight is a concern.
The synthetic stocks with aluminum chassis molded into them are very stable, and relative inexpensive to make. But having the aluminum molded in them adds to the weight and usually results in a chunky, thick stock through the grip and forend. I actually like these for a target/tactical/range gun. They are a bit more than I want to deal with in a hunting rifle.
The high end synthetics are made by laminating layers of fiberglass or kevlar cloth to make the part of the stock between the grip toward the end of the stock past the recoil lug. The action area is then milled out just like a wood stock vs just pouring plastic into a mold.
That makes for a very rigid, stable stock that is also very lightweight, especially those made with kevlar. The buttstock and forend in front of the recoil lug is made with a couple of layers of fiberglass or kevlar cloth on the outside. They are hollow in the middle and filled with foam to keep noise down.
You get a very tough, stable stock that is also very light. They are also the most expensive. Expect to pay at least $600 for one. And they can go a lot more than that.
The cheap "tupperware" stocks that come on factory rifles get a bad rap. But I've found that they've come a long way compared to when they were 1st introduced. Manufacturers such as Ruger have developed unique bedding systems that don't really need a stiff stock to be accurate. And the synthetics made by companies like Tikka are actually pretty good. The average shooter probably can't shoot well enough to take advantage of the more expensive stocks.
