### Instruction:
What are the five best sports cars to buy right now, under $200K USD?

### Response:
Assuming now authorized dealer markups (ADMs), the following cars are often considered among the best sports cars under $200K. 
1. Porsche 992 GT3, 2. Audi R8 V10, 3. Chevrolet C8 Z06 Corvette, 4. Porsche 718 GT4, 5. Acura NSX