DevilTail,besides Savage and Remington,you might want to also look at the Tikka T3 varminter and the CZ-550 varmint and also the Howa varminter line of rifles.
I have 2 Savage 308's,a 10FCP and a 12FLV.They both are great shooting guns,and I'd be the first to brag about Savage rifles,but there are many brands that shoot well today.
If you want a rifle that is easy to change up,buy a Savage or Remington.Savage is the easiest,and most user friendly-No Gunsmith needed to change calibers.
If you want a rifle that is going to perform well,look at all of the brands listed,and pick the one that fits you best,and has the features that you want.
Just be sure to put some good optics on top of the rifle,and it will make it that much more enjoyable.