Mercedes C63 S AMG vs. BMW M5 F10 vs. Audi RS6 C7 Exhaust SOUND Comparison!

I made this video to compare the exhaust sound between the Mercedes C63 S AMG W205 4.0 twin turbo V8, the BMW M5 F10 4.4 twin turbo V8 and the Audi RS6 C7 4.0 TFSI twin turbo V8. Which one do you think sounds the best? Let me know in the comments section below! Follow me also on: - Facebook: http://www.fb.com/NM2255 - Google+: http://plus.google.com/+NM2255 - Instagram http://www.instagram.com/nicknm2255/ - Twitter: http://Twitter.com/NM2255 - 2nd Car Channel: http://www.YouTube.com/NickCarVideos