RE: 30-06, .270 , .308 which is a better for whitetail
Go with the .30-06 for the simple reason that it has a much wider range of factory loads available for a wide range of applications(150 gr. to 220gr.). If you ever decide to step up to bigger game, you will have a capable rifle. The accuracy debate is negligible. Put good glass on it, practice and you will be happy.