I voted 25-06. It's the perfect little deer caliber, a little hard to find ammo for.
I have a 270, shoulda got a 25-06, because I have to order her preferred ammo anyway[:@].(hmmm, now that I think of it, that ammo isn't available in 25-06)
308 is good too, and could be stretched out way past 300 yds if you ever decide to go deer sniping. easy to find ammo.