Here's our weekly roundup of the new products CNET reviewers liked best.

The good: Cabin technology in the 2008 Infiniti M45x includes a hard-drive-based navigation system with traffic reporting, a great-sounding stereo with many digital music options, adaptive cruise control, and an innovative lane departure system.

The bad: The engine doesn't strike a great balance between economy and power, excelling at neither, and the five-speed... // CNET News

When you think big, comfortable sedans with cutting-edge tech, you look for a price range around $80,000 to $100,000 and think models such as the Mercedes-Benz S-Class, BMW 7-series, and Lexus LS. But then here comes the 2008 Infiniti M45x with all the tech those other cars offer for a measly $60,000, fully loaded. This is the car for well-heeled value shoppers.

The M45x model is Infiniti's top-of-the-line sedan, featuring the model's largest motor along with all-wheel drive. This big sedan cruises easily and coddled us in its very comfortable front seats. Infiniti has been a real leader in cabin technology lately, and our M45x test car came with not only the optional Technology package, but also the Advanced Technology package. There are only a... // CNET News

CNET Reviews (Enlarge photo)

The good: Cabin technology in the 2008 Infiniti M45x includes a hard-drive-based navigation system with traffic reporting, a great-sounding stereo with many digital music options, adaptive cruise control, and an innovative lane departure system.

The bad: The engine doesn't strike a great balance between economy and power, excelling at neither, and the five-speed automatic transmission didn't feel particularly modern.

The bottom line: The 2008 Infiniti M45x offers some of the most cutting-edge cabin tech at a rock-bottom price, compared with the competition. The car is a good luxury cruiser with some performance aspirations.

Specs: Body style: Sedan; Trim levels: M45X; Available Engine: Gas  See full specs

Many cars stop at these three basics: navigation, digital audio, and... // CNET Reviews

With 325 horsepower and 336 pound-feet of torque, the 4.5-liter V-8 under the hood isn't the most powerful engine around. Instead, it seems as if Infiniti is trying to strike a balance between power and economy. The engine does give the car decent acceleration, but it's not overwhelming. It seems more that Infiniti realized people buying a big luxury sedan weren't going to push it hard through the twisties, so it tuned the engine for comfortable freeway cruising, making sure there would be power when you needed it.

The engine uses continuous valve timing technology to maximize efficiency, but even so, the car is subject to a hefty gas-guzzler tax. The EPA gives it 14 mpg city and 20 mpg highway. We averaged a bit more than 16 mpg, right in the middle of that range, not great, but about... // CNET Reviews