What caliber would best suit my needs?

[Bill Allen]

I want to buy a new rifle for deer hunting so I figure that it would make sense to decide on a caliber first. The longest shot I have to make is about 200 hundred yards, though most shots are in the 50-150 yard range. I have been using a borrowed Savage .308 with a synthetic stock that weighs in at a hefty 11 pounds but I don't mind the weight since I usually sit in a tree stand. (I suspect that the weight is the reason that the gun has so little recoil.) I have no complaints with the .308 but I have not shot any thing else to compare it to except my brother's 7mm which just has too much recoil, for me. What caliber would best fit my style of hunting? Thanks.