On "Cherry-Picking" the Commentaries

Gary responds to a critic accusing him of nefarious Bible study tactics, including "cherry picking" select commentaries and tools. While "cherry-picking" does indeed sound bad and something one should never do, the question must be asked: How else would you do it? If we cannot select sources that help bolster our own views or reveal the weakness of opposing views for fear of being a "cherry-picker," how then should we do scholarship?