Digital or analog audio connection to receiver?

I'm very new here, and I apologize if I missed this anywhere else, or I'm in the wrong area, but I was wondering what would be the preferred connection between a cd/dvd and a receiver? I've been out of this for way too long and I just don't know if its black and white or not. Just looking for some opinions. (and just speaking of mid-line equipment - nothing too outrageous). Thanks!