RE: What make, model & caliber would you buy?
I don't know if saying what I would buy is going to help you in your decision, but..
I would buy something I don't already have. I don't have a Browning A-bolt yet. Also, I don't have a quarter bore yet, but I think I may fill that hole with a custom shop rifle.
Maybe a 257 Roberts, to be Ackley Improved. Actually the 250-3000 Savage would be a little more efficient improved, but not as easy to find "off the shelf"
For a light rifle, off the shelf, the Remington Model 7, or the Ruger Featherweight. I really like the looks and feel of the Ruger Featherweight. The black ebony on the stock looks sweet. Too bad the bolt is on the wrong side for me!