As the price of entry-level premium luxury sedans push closer to the $40K mark,manufacturers have spotted an opening in the marketplace for a $30K luxury performance car. Nissan has clearly moved the Maxima into this position,as has rival Volkswagen with its Passat. With the rise of the Altima 3.5 SE in the mid-20K area,the Maxima finds itself repositioned upward to appeal to a more affluent buyer. Offering off-beat good looks and such unique features as the Skyview fixed-panel glass roof and rear-seat center console,the Maxima is a compelling and competent alternative to more expensive luxury sedans.