Only one rifle? Get the '06. It is far more versitle than the 7mm and it can handle everything from varmints to moose.
You won't be sorry.
And if I were to select a rifle, it would be a Savage bolt action with the accutrigger. Great out-of-the-box accuracy and less expensive than most of the other manufacturers. The money you save on the rifle, you can put toward a better quality scope.