I am looking at getting a new challenger and would like the 6-speed. I would like to know if the manual will outperform the auto, assuming you know how to shift well. Seems like the manual cars have always been slightly quicker than autos over the years. Is this still the same? I think manuals also have slightly higher mpg according to literature for the challenger. This might be due some to different final drive ratios though. Thanks for any insights.