I can't help you much on the kinds of shotguns- i havent handled any of those guns. whatever you get though, make sure it shoulders well for you.
As for wood vs synthtic, its a taste type of situation. A synthetic stock is generally lighter, easier to clean mud off, and if you get the gun wet, its easier on synthetic and hard on wood if it happens very frequently. But a wood stock gives a gun a more conventional look, and some feel its the only stock a gun should have. I have guns with wood stocks, and guns with synthetic. Really don't prefer one to the other. I'll also mention that if put through rough, heavy use, synthetic is likely to hold up better and not show scratches, nics or other marks of use. go with what you like best.