I see this has turned into a noise poll (which is fine, BTW). The original premise, in which the OP says they like V10s as they have "just the right amount of power" is a bit flawed. And even taking into account the sound factor, you've got all sorts of other things to think of. For example, I think a Ferrari flat-plane-crank V8 sounds awful below about 6,000 RPM, but then heavenly from there to the redline.
I voted V10 because there was a guy near me who had a Gallardo, and he always gave it the beans down our street. It had the most amazing aural range, it just sounded marvellous.
He's moved away now, the selfish so-and-so.