I don't know that "accuracy" enters into the matter, beyond getting the name of the piece right and being able to tell if the musicians are in tune. The rest is a matter of personal taste, so the trick is to find critics whose taste complements your own.
That's not quite
right, I hope. A good critic is one where you don't need his or her tastes to complement your own to a.) enjoy reading a review (super-rare, because most of the writing is at such a low level) and b.) gain enough information, objective and subjective reaction, to begin form an opinion of your own. Think - in live reviews - of what Martin Bernheimer can do.