Last year, I was driving through the mountains, behind a motorcycle that sounded so good I had constant goosebumps from it. The sound of it echoing between the mountains, slowing down, accelerating for like 30 minutes was such a special experience. When I was behind it, I didn't know what it was, but I had to find out. When we came to a village, we both stopped at the same traffic light, next to each other, so I could see what it was. It was an Aprilia RSV4. I will never forget it, and the sound it makes. I think the guy on the bike saw the OMG look on my face and we both had a laugh.
I'm seriously contemplating a Tuono V4 (the naked, more upright version) as my next bike in a few years... I just wish that they made it in the same obnoxious Acid Gold finish as they do the 660 because I'm a sucker for loud colors.
V4 motorcycles are my favorite sounding bikes! Also arguably the best engine configuration for bikes as well. 3 of the 4 manufacturers in MotoGP use v4s and they sound amazing.
I had a co worker with a 6 cylinder Honda Valkyrie. I don’t believe it’s possible for a bike (or maybe even a car) to have a better sound:
https://youtu.be/eoo5f7FkuDU
Here's two videos of how it sounds. I just had goosebumps again watching them a bit. https://www.youtube.com/watch?v=q3WdxhXlLpc https://www.youtube.com/watch?v=wY_Bca6158s