For decades the SL has been the halo vehicle in the performance convertible segment and absolutely nothing has changed in the modern era. Mercedes-Benz is a collection of syllables that once spoken immediately evokes quality, performance—decidedly the best. From the sonorous sounds of the engine to the modern elegance of the cabin, the Mercedes SL63 AMG is, was, and will forever be the best of what a luxurious performance drop-top can be.Starting the engine is a treat for the ears. Many performance vehicles sound good, this one deserves a Grammy. Putting the car in gear and pressing the accelerator is similarly impressive. The SL pulls confidently and without drama as if it has done this many times before. Corners are dealt with athletically, the automatic side bolsters moving to cradle you firmly until the road becomes less twisty. The SL63 AMG uses a self-adjusting suspension to combat body-roll and unflattering movement while traction and stability control allow you to have fun without scaring your weekend get-away companion too much.The interior of the SL is beautifully tailored, swathed in stitched leather and aluminum trim, and contains the best of Mercedes' technology offerings. A Harmon-Kardon sound system perfectly compliments the aural orchestra of the engine; heated, cooled, and massaging seats keep you relaxed in perfect comfort; and the retractable hard top deploys as quickly as it does elegantly. Additionally, this truly is one of the only convertibles that looks equally as stunning and comfortable no matter if the top is up or down.The Mercedes SL63 AMG is the perfect grand-touring convertible, and a strong contender for best all-around motor vehicle outright. The Benz has earne