Which is more accurate: digital or vinyl?

Good tapes and mastering will decide the winner. Both can be accurate. Like a paint job the bodywork is 90% of a great job. The clear coat and paint itself is going to show a crappy bondo job. Poor tapes and mastering is obvious.

The tapes were baked because they used a synthetic tape lubrication not whale oil based lubricant. Overtime they became unplayable. Record companies were in a frantic panic to find a solution. The solution? Bake the tape. It can be played back within I think 48 hrs. You can bake it again, but don't know how many times! Steely Dan goucho had to be re-baked to do the sacd version.