hannah elliott helps out by taking three cars for a test drive. >> the perfect sports car should combinenimble steering, power, and high-quality cabin. it will be expensive, but not so pricey that it is out of reach for everyone. >> porsche, mercedes, and jaguar have three of the top sports cars on offer today, but which is best for you? ♪ >> let's get the numbers out of the way. all three have impressive stats. the porsche comes just slightly behind the benz and jag, but each is a thrill to drive in its own way. >> this is the 2017 porsche 911 carrera cabriolet. the engine is a 420 horsepower six-cylinder boxer engine mounted in the rear. this is porsche's famous engine. it is difficult to describe the feeling you get behind the wheel. this is where that mystical porsche x-factor comes in. the real will drive on 20-inch carrera s wheels and porsche torque factoring that grips the road better than any other model in our group. the amg gts feels like a rocket ship. this car has a lot to offer, a v8 engine, horsepower, torque. of course, if you are not careful, the rearwheel drive amg will