Of course, the most evident option for German sports cars would be Porsche. If any individual wants a real worth of his money, then he should prefer Porsche. This most popular German car brand produced lots of diverse models but now the most fashionable Porsches in the US are 911, Boxster and even Cayenne.
It may not be an obvious item in the list of sports car, but they built a number of such cars since it started its operation. Possibly the most obvious one among these cars was the Karmann Ghia. And this model was even known as the slowest car in the world, even by some dealers but it was the similar type of sports car in terms of all other features.