I'll throw in the change up.
30-06 hands down. Old school west coast do all rifle.
The east coast guys version of the do all seems to be the 257. Why? I Dunno.
Maybe cause we have Elk on the menu the -06 is more appealing?
I just wouldn't limit myself to a 115 gr .25 cal bullet, when I could whack gopher to griz with the ol -06. From 55 gr accellerators to 220 gr+ bullets.
The 257, while probably a great round just doesn't cut it for some folks as anything more than a varmint/deer crossover round. For that purpose, the 257 shines, but so does the -06....
Not trying to ruffle any feathers, just a difference in opinion, & critters in geographical locations, along with intended use on game, that makes the -06 the hands down, no contest winner imo.
Guess it comes down to what you wanna do with it, game wise. Deer, & dogs I guess the 257 would be fine, but for bigger critters (Elk, Moose, Bear, etc) I know what I'd choose.