There's little reason to purchase sync/charge cables that cost more than they absolutely have to -- Monoprice's Lightning cable is a great example of an inexpensive and effective option -- but extra length and standout design can sometimes make cables worthy of a higher price. BlueFlame's 2M Charge and Sync Cable with Lightning Connector ($30) possesses both those features, at a $10 premium over Apple's standard cables. It's double the length,…