Thought this was an interesting comparison between the two. Obviously videos don't capture all the sound and clearly there are two different software states running for the pops and crackles, but I think this is still a pretty useful side-by-side:

 

Glad my '17 came with the Sport exhaust. I love the sound!

 

When comparing exhaust systems on the C63, please make sure to use the same drive mode. Both systems come with a computer controlled flap in the H-Pipe. So if one car is in S and the other in S+, this can make a huge difference!