This is not it.
This is the 3.5L V6 that came in the Nissan 350Z/Infiniti G35 and I always thought it sounded completely terrible. The bump up to 3.7L didn't help and the GT-R's 3.8L (which is a quite different V6) also sounds pretty meh.
Nissan isn't the only V6 that suffers from gross-noise-itis. The Honda Accord V6 moans similarly (and induces moans, if I say so), as well as the 2GR-FE from Toyota. American V6's are also pretty gross, with the Mustang and Camaro engines leaving a distaste in my mouth.
But they can't all be bad, can they? Surely there is something out there that makes a sound to inspire me. The only one I can think of is the Volkswagen VR6 engine which is technically a V6, albiet a very narrow one with it's 15 degree bank angle.
So how about it? What are your favorite V6 noises? Convince me that V6's don't all sound like something sticky I stepped on in the front yard.