Out of the four cartridges that you mentioned, I personally like the 30-06 although any of them will work fine. My reasoning is a little different from most people, I'm 48 years old and have pretty bad tinnitus. For some reason .30 caliber rounds make a sound that doesn't hurt my ears. I absolutely hate being near my buddy when he shoots his .270 or his 7mm Mag, it's like the noise is at a different frequency. If you didn't take trips out west I'd recomend using a 30-30. I'm really curious about the 7-08 though, since it has a shorter action maybe a gun with a longer barrel would have the same overall length, and I've been told that a longer barrel will have a different sound signiture that may be tolerable.