Both have their faults. Both have times when they're wrong and the other is right. Each method is imperfect, but they both have their own purpose and both must be used. It would be very ill, academically speaking, to use just one method. With that said, which do you find is more accurate? (overall)
-
The first option may or may not be accurate, but it'll definitely be consistent. The second option could be both inaccurate AND inconsistent.