Bloodwork is more reliable, but the “rigid digit” is cheaper (and philosophically aligned with ObamaCare).
I was told by two doctors (One an Oncologist) that blood work is more reliable, but digital more often gives the first indication that there might be a problem.
I also know of two men that had theirs discovered "digitally" and the blood work, showed only a minor change. Both of these were 10 years ago, so the test might have improved since then.