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Infiniti's mid-size sedan, the M, has been around for quite some time, but it's still one of our favorite luxury sport sedans. We lived with an M45 for a full year, and not once did it require repairs. Even those in the office who didn't initially understand the M45's place in the automotive world came away from the test in awe of how good this Japanese BMW-fighter really is.

Infiniti's mid-size sedan, the M, has been around for quite some time, but it's still one of our favorite luxury sport sedans.

As I drove home in the CLS last night, I couldn't stop thinking about Jaguar's XF. The Mercedes has a dramatic presence that the XF is missing. I don't find the CLS gorgeous - especially the headlights - but it does stand out in the crowd. What a great concept Mercedes has. Build the E-Class for the more traditional Benz buyer and the CLS for the person who wants a bit more style. Unfortunately, the CLS doesn't drive as well as the Jaguar. The Mercedes V-8 is very strong but the seven-speed automatic is slow to downshift. I also find the air suspension really disconnects the driver from road. It is too floaty and I don't like constantly having to toggle the suspension switch to try to contain body motions. In the end, I wish the XF was more dramatic like the CLS but that the Mercedes drove as well as the Jaguar.