No avoid all vinyl LP's like the plague especially, any mint 60's British rock pressings with names like Parlaphone, Decca, Vertigo, Trax. Send them to me and I will properly dispose of them.
Whether they are digital or not depends on the era of the recording and the model of the cutting lathe. Some of the later ones used digital processing to facilitate the spacing of the grooves during the cutting process. You really have to know what kind of lathe they are using. A few specialty labels make it a point to state that they are using a all analog lathe. Most of the stuff nowadays is probably digital, but that not always a bad thing if they cut from a Hi-Res digital file that hasn't been down sampled to CD red book format, or otherwise compressed for the CD release.