Shop the 2007 Mercedes-Benz SL550 against:

2007 PORSCHE 911 CARRERA The most reliable daily driver of all these cars. Coupe, convertible, or Targa models available with a flat-6 engine in 325- and 355-horsepower versions. You can also get all-wheel drive. Priced from around $75,000 to more than $100,000.

2007 ASTON MARTIN VANTAGE Not a drop-top, but fun at 380 horsepower with a six-speed manual transmission and looks that say 007. The sticker is probably going to $115,000.

2007 JAGUAR XK SERIES Comes as a coupe or 2-plus-2 convertible. Engine choices include a 300-horsepower V-8 or, in the XKR, a supercharged version with 400 horsepower. Priced from about $80,000 to more than $90,000.

2007 CADILLAC XLR A couple of engine choices with the base a 320-horsepower V-8 and a supercharged 443-horsepower version (XLR-V). Edgiest looking car in the bunch. Priced at about $80,000 to more than $100,000.