RE: what gun should i get
All mentioned are good chocies. However, I would suggest a .270win or .270wsm. It will give you the flat shooting and distance of a .243 with a heavier bullet.
It is one of the most accurate calibers ever made. It has virtually no recoil. It can be handled just like a .243 and will give you a 130, 140, and 150 grain bullet option. A lot of hunters like the newer calibers, but the history of the .270 as a hunting caliber will never be questioned.
I have a Remington 700ADL in .270win. My g'f even loves shooting it, so that should show ya how much recoil it has.
As far as the gun goes. I would go to a dealer and shop around and see which fitted your body. Browning, Remington, Ruger, Thompson Center, Weatherby, and many more make great rifles that are more than adequate for the average to everyday hunter.
And if you want to step up to the big boys, sure a .270 Weatherby Mag, 300mag, or 7mag would do.