I thought this would be a better place to ask rather than specific car forums of each manufacturer as I don't want to listen to fanboys. I've been doing quite a bit of research on both online, but haven't gone to test drive yet. I am going to be replacing a last generation S500. I like the styling of both. I'm now sure the Quattroporte is "luxurious" enough and may handle a bit too rough. I've looked at the performance charts and they are about equal. For the extra money you spend on the Maserati (not to mention the Ferrari motor and the legacy of a sports car), you would think it would far outpace a MB S550, but it doesn't. That's what has me held up on what to do. A MB S550 that I'd want would run about 105k, so the price between that and the Quattroporte is negligible (though to be honest I haven't looked into how much the upgrades are as I have to go to a dealership for that). Does anybody have an opinion on either of these cars? If you've driven one, I'd love to hear your reactions. I know the S550 is loaded with features, but to be honest, I probably wouldn't use most. But the infrared does sound like a great idea.. N.B. I'll be purchasing (probably financing through the dealership), not leasing.