I, myself is waiting for the Corsa. Like you, I have listened to every youtube vid out there. It seems quieter than the E-Race, but louder than a Dinan. THe youtube vids of the E-Sport sounds almost stock. The Supersprints sound too deep for my tastes. The Corsa is deep on idle, and at about 5K-6K, it lets out a high-pitched sound a bit lower than E-Race. No drone, as claimed by their RSC technology, as well.