The SL500 is now the SL550 for 2007. It has more power and is definitely a gorgeous car, but for $30K more, it's not any faster. Since it weighs significantly more, the SLK55 AMG with less power is actually faster. Now, the SL55 AMG is a different story, but it's also double the price! If I really need that much power, you can go the same route aftermarket for 15-20K and save $45K over the SL55 AMG!

$63,275 (slk55) vs. $95,575 (sl550) vs. $129,575 (sl55)...