The two are both obviously among the more popular cartridges chosen for hunting medium game here in the US. There are both recoil and ballistic charts out there from which you can glean comparison information.

My personal preference would be the 30.06 Spr. because of the very wide range of bullets that can be loaded in this 30 cal. cartridge. And unless you are shooting well past 300 yards on a regular basis the difference in muzzle velocity should not matter much.