If you want "out of the box" accuracy, ease of mounting a scope, more modern esthetics, (sometimes) lower costs, better reliability, etc., .......then go with a modern commercial sporter.
If you want a "project" rifle.....and you want CHARACTER, then go with a milsurp.
I prefer character, myself. Nothing whatever wrong with modern sporters (they are actually better in most ways, I have to admit.....darn it !).....but they don't speak to me the way an old Mauser does. My old Mauser is like an old friend - I know it's every eccentricity, what it likes, etc. I trust it completely. I never got that with a modern rifle. That's why the only rifle I have now is a 62 year old Mauser.