In the calibers you mentioned, I would go with the 7-08, never had one myself. I started about 45 years ago with a 30-06 and have stayed with that size and larger for bolt actions. My reason is that for most things ballistically it is fine, not quite as long ranged as the 25-06 or .270, and has a bit more umph than the .243. It can use a shorter action than the 06 based cases and therefore is considered a bit more accurate. I have a little Ruger #1 in 7mm Mauser which is about the same, really pleasant to shoot in a light weight rifle due to low recoil. Look at the available rifles and get what you like, not what anyone else may say.