What are the differences between the Audi A6 and A6 BiTurbo models?

I am considering purchasing an Audi A6 but am unsure if I should go for the standard A6 or the A6 BiTurbo model. Can someone explain the key differences between these two models and which one would be a better choice? Thank you!

The main difference between the Audi A6 and A6 BiTurbo is in the engine. The A6 BiTurbo has a more powerful engine with two turbochargers, resulting in better performance and acceleration. If you're looking for a more exhilarating driving experience, the A6 BiTurbo would be the better choice.

While both the A6 and A6 BiTurbo have similar features and technology, the BiTurbo option offers a sportier look and feel with its unique design elements and quad exhaust pipes. If you value a sporty aesthetic, the A6 BiTurbo may be more appealing to you.