rear-drive Sedan

The Bottom Line: The 2007 Jaguar Super V8 looks good and features a luxurious interior, whether you sit in the front or back. But its tech offerings are a mixed bag, with a dated stereo but modern cell phone integration.

Specs: sedan, Super V8, Gas

The Bottom Line: The 2007 Infiniti M35 is a real crowd pleaser in the luxury sport-sedan category. Dripping with onboard technology and tuned for spirited driving, the M35 is our kind of car.

Specs: sedan, Sport, Gas

The Bottom Line: The 2006 Cadillac STS-V is built like a tank, goes like a train, and drinks like a fish. A comfortable, tech-laden cabin and blistering top-end performance make this car a serious contender on the sports sedan stage.

Specs: sedan, Base, Gas

The Bottom Line: The 2007 Mercedes-Benz E550 is a powerful pugilist in a coat and tie. Its classy exterior, glorious V-8, and well-appointed interior are let down by some poorly designed cabin technology.

Specs: sedan, E550, Gas

The Bottom Line: The 2006 Lexus IS 350 uses the highest-quality cabin electronics, and its strong engine and good handling make it a lot of fun to drive. At its relatively low price, it is one of the best values in a luxury sport car we've seen.

Specs: 350, Gas

The Bottom Line: With more horsepower than most sports sedans, a hybrid engine, and a long list of tech features, the Lexus GS 450h is a consummate package of comfort, performance, and technology.

Specs: sedan, Base, Hybrid

The Bottom Line: The 2006 BMW M5 will appeal to cutting-edge speed demons who are willing and able to master new technologies. Once the transmission has been mastered, performance is stunning, with plenty of comfort features to boot.

Specs: sedan, Base, Gas

The Bottom Line: The 2007 S550 is a fitting flagship for Mercedes-Benz, offering cutting-edge technology to go with excellent performance for a full-size sedan. It's expensive with all the gizmos but trumps the competition in nearly every respect.

Specs: sedan, S550, Gas

The Bottom Line: The 2006 Jaguar Super V8 is a spacious and exceedingly comfortable executive luxury sedan with fine road manners, as well as leather and burled walnut in the classic English tradition. But it's a bit too traditional in its electronic-entertainment offerings.

Specs: sedan, Super V8, Gas

The Bottom Line: The 2006 BMW 550i is a technology powerhouse, with performance and a features list to whet any modern enthusiast's appetite.

Specs: sedan, 550i, Gas