If it's a gun that won't be carried much (or a bench gun), carried just to/from a stand, then I'd go laminated. If it's one you will be carrying all day long, synthetic.
They are both plenty strong for just about any given action, but the laminated stocks can be quite heavy.
Great advice danf I'd add that the caliber might play a role too. If it's going on a larger calibers with more of a kick, the heavier laminate stock could tame it a little. I've got a 700 Mt. rifle in the 280 and it will knock the snot out of ya if you're not use to it. I've thought several times after buying it of getting a laminate stock just to make it more fun to shoot. Each time I think about it, I remember how much still hunting I do with it. Plus I really only felt it on the range and I've taken care of that problem with the lead sled.
"It's better to be hated for who you are…then liked for you're not"
Here's the scenario. I broke a piece of the synthetic stock off my Winchester Model 70 last fall. It is a 30-06. It is the rifle I use primarily for deer (tree stands, blinds) and elk (walk, hike, climb, slide, walk some more). The gun can shoot 3/4" groups off a bench and is very accurate. I want to keep it that way. I really like the looks of some of the laminate stocks, but worry about durability. Will they hold up to wet weather as well as a synthetic? Weight can be an issue, but I don't think we are talking a large difference in weight here. 1/4 lb maybe?
Depending on what stock you go with, there can be a much bigger difference than that... I can't quickly find any info on them to compare for you, but I would definitely make sure you know what you are getting. You'd be surprised how much the laminates can weigh.
If it was me in that situation, I'd probably go with a decent quality synthetic, probably flat black so I wouldn't have to worry about the finish if it got banged up. But that's just me.
McMillan for a drop in synthetic. They are a bit pricey but you get what you pay for. Best part is it really is drop in, not modification required. I would expect to spend around 600
accurate innovations is one for Laminated. I have never used one but have seen them. VERY pretty stocks and very accurate. These are also drop in with not mods required. Again these guys are pricey, expect to spend 700-800
you could also go with Bell and Carlson. Decent stocks, some are drop in some are not. They have one called the Medalist that is less than 2#'s. You can get them from several places such as midway and run between 200-300.