Cars: Better Now or Then?

Most automakers re-engineer their models every five or six years to update the technology under the skin. But to keep customers coming back for more, they have to change the skin, too. But by how much? Here are a few recent redesigns for you to ponder that question over. (Infiniti)

Ford Explorer The all-new Explorer (top) is even more different than the one it replaces (bottom) than it might appear at first glance. In making the switch from truck to crossover, Ford kept the SUV's signature forward-slanting C-pillar and wraparound-style rear glass while softening up the rest of the bodywork to bring it more in line with its new car-like feel. Which do you prefer, truck or truckvestite? (Ford)

Mercedes-Benz CLS When the CLS hit the scene in 2005 (bottom) with its sleek, elegant lines it launched a new market segment known as the four-door coupe. For 2012 (top) the pretty body of the original has been muscled-up to match the car's increased power trapped under its bulging skin. Which do you prefer, cheesecake or beefcake? (Mercedes-Benz)

Infiniti M The last generation Infiniti M (bottom) combined excellent driving dynamics with a sharp exterior that perfectly fit its mission as a sporty executive sedan. The latest version looks like the four-door equivalent of Kim Kardashian, with a super curvy body and wide-eyed face. Which do you prefer, buttoned-up or bodacious?

Kia Rio The old Kia Rio (bottom) was the poster-child for cheap and not so cheerful cars, but the South Korean automaker has been undergoing a design renaissance these past few years and the latest version of its lowest-priced car (top) hasn't been left out of the fun. Which do you prefer, old school economy or high style at a low price? (Kia)

Porsche 911 For nearly 50 years, change to the 911 has moved at a glacial pace and its no different for the all-new 2012 model (top). Look closely enough and you'll see a car that's lower, wider and longer than the one it replaces (top), but you'll probably get a headache in the process. Which do you...oh, forget it, they look the same. (Porsche)