Easy. Any E60 M5. It will simultaneously make you look (and sound) very rich, but it will keep you very, very poor.

“Feels like a BMW”

A lot can be gleaned from perusing forum threads and comments.

There was a really funny article in Car and Driver years ago about driving on the Autobahn in Germany. I remember the author remarking about how many Mercedes-Benz’s he’d seen with model designation’s he had never even heard of.