I was positively blown away by the M37. Even the active steering, which normally frustrates me to no end, was acceptable. I'd still prefer traditional steering if I were to own an M, but this is the least offensive application of Infiniti's system I've experienced.
Like Mr. DeMatio, I found the interior to be superb. Everything looks very luxurious and there are tactile delights on the seats, dashboard, and even the mundane items like audio controls. I particularly appreciated the logical grouping of buttons for the stereo, HVAC system, and other controls. The lack of new age inputs (one joystick doesn't need to control everything in a cabin) allows drivers to focus on driving and use muscle memory to quickly adjust the temperature or audio settings.
Perhaps there's still an argument for choosing a 5-series over the M37 because the VQ engine is aging and certainly isn't the most refined six-cylinder around, but the 7-speed automatic is a delight and the car's design is beautiful in a modern Japanese way. I dare say I'd rather have an M37 for a Four Seasons test vehicle than our new BMW 535i.
Phil Floraday, Senior Web Producer