my family uses 30-30, 25-06, .243, .308, 350L, 7.62x39, my favorite .270 Win. I have friends that use anything from 22-250 to 300 Win Mag.
30-06 is pretty much at top of whitetail heap. If you just have to buy a new rifle for kicks, I’d get something that filled another niche not just deer. No sense in having a .308 and 30-06… unless your me. I need both because .