Apple has firmly established the iPad Air 2 ($499-$829) as the definitive flagship of its tablet line. Last year, there was ambiguity — some were justifiably willing to sacrifice screen size and color accuracy for comfort in the iPad mini with Retina display — but the introduction of the newest iPads has made it clear. The iPad mini 3 received scant upgrades, little more than a new gold color option and Touch ID. By comparison, the iPad Air 2…
