It all depends on what you are looking for! In my book the 335i wins because its the fastest of the 3. I have not driven the ATS but I have driven the MB C on a Auto Cross track and it was terrible it was like a boat on land rolling all over the place.
As he said the 335i has the least amount of power but the fastest of the three. That there is a win in my book!!
: 335i Sport W/ Adaptive M suspension| Sport Variable steering| Technology PKG| HK Sound PKG| BMW apps| BMW Assist| Sport line hand brake grip| M Performance black kidneys|