In some respects the 2007 Mercedes-Benz E320 Bluetec renders the company's E350 redundant. It offers a similar driving experience at a similar price, and in the bargain you get the Bluetec's bladder-busting 700-plus-mile range, and much better fuel economy. Neither one is a hard-core back-road burner, so if you've got a $50-grand craving for an E-Class and live in the right state, we say skip the E350 altogether in favor of the Bluetec. By nearly any measure, the Bluetec acquits itself as the entry-level E-Class of choice.