Savage, hands down.
Parts are easy to find and plentiful, and they are great rifles to boot.
If it's your first rifle, 30-06 is a very good choice, will take pretty much anything in North America and is plentiful on the shelves just about anywhere you go.
Other calibers I would entertain would be 308, 270, 7mm Mag maybe... unless you have one of the basic hunting calibers in your hands already, I would stay away from other calibers as they are harder to find in a pinch.
Save your money for a good scope, base and rings... at the price range of the rifle, paying more for the scope than the rifle should be expected. Better glass = being able to take those early morning and late evening shots, when other glass just won't cut it.