IS THIS a bargain-price long-wheelbase S-class? The S350 Mercedes-Benz sneaks in under the $200,000 price point, which may be cause for some to see it as a relatively cheap luxury German limo. Not that anything in these realms could be considered cheap, but the S350 L - a new model within the facelifted S-class range - does provide the opportunity to indulge in magnificent comfort for less money than before. And in its latest, updated guise, the big Mercedes offers a little more of everything more power from a bigger V6, more comfort from new seats and improved safety via a new, anticipatory system that prepares the car to help protect passengers if a crash is imminent.