What is the difference between the Audi R8 GT and Audi R8 Spyder?

I am trying to decide between the Audi R8 GT and the Audi R8 Spyder. Both seem like great options, but I am having trouble figuring out the differences. Can someone help me understand the main features and pros/cons of each?

The Audi R8 GT is a high-performance sports car designed for track use, while the Audi R8 Spyder is a convertible version of the standard R8. If you are looking for a more intense driving experience and plan on taking your car to the track, then the GT is the way to go. However, if you want the option to enjoy open-top driving, the Spyder may be a better choice.

One of the main differences between the Audi R8 GT and the Audi R8 Spyder is the engine. The GT comes with a 5.2-liter V10 engine, while the Spyder has a 4.2-liter V8. For more power and a louder engine note, go with the GT. If fuel efficiency is a concern, the Spyder's smaller engine may be a better option.