Either one will do ya.
If money is not an issue, get them both. I have several 257 Roberts rifles, and a few 7x57's, which are so close to the 7-08 there's really no arguing between the two.
We got one 7-08 right now. I'm getting a 7-08 in a featherweight. Local shop has a Bob in a hawkeye with a sweet piece of wood. No one seems to want it. Been there at least 6 months. It's just one of them guns thats like a snake. Everytime I'm near it I get bit.