Mushroom,
Your kinda asking a loaded question (pun intended). All the major companies producing bolt actions make fine weapons. That is what is nice, the consumer has great choices that can be decided by personal preferences to certain features that are unique to each gun. You do get what you pay for, but I wouldn't ever think of NOT using a Savage because it is cheaper in cost, nor would I opt for a Weatherby or other expensive rifle, thinking that it is better because it cost more. I've yet to see where a Winchester barrel lasted longer then a Remington barrel. Now you may read, or find in actual use, that certain calibers may wear out a barrel faster, but never that one production manufactor is better then the next (till you get to custom guns)
If your looking for a new rifle for such extreme use, you will need to look over the features of each rifle. Personally, I'm fine with plastic/fiberglass stocks, but don't have much faith in plastic being used in other parts of rifles. Case in point, I have a Remington model 78 in 270, nice no frills rifle, but I don't like the plastic triggerguard or rear site base.
You would do well to list what it is your looking for, feature wise. I don't believe in the "this is the only rifle to own" theory. How a rifle stock fits can lead to many debates. I can't stand Remington''s stock design on a whole, but for the next guy it could be perfect. Do you get where I'm lead ya?