

Get a chance to try both Mercedes Benz C350 and Lexus IS 350.
Both are 3.5 liter engine, so I just use this as a comparison.
Engine:
Definitely Lexus. IS 350 engine is much stronger, pull harder and rev higher compare to C350. Lexus engine with both direct injection and port injection.
Weight distribution:
Pretty much the same.
Luxury:
Lexus.
Ride:
Mercedes. A whole new ball game. The ride is firm yet not too harsh.
Brake:
Lexus. Benz is too touchy. But power Benz stop much shorter.
Look:
Benz. It looks more aggressive.
Overall:
Benz. Why? Ride is so good everything else is not important. Plus good look is bonus.