I Love the sound of a v8 and v12 as well, my range rover sport supercharged sounds incredible. I have that 5.0L s/c v8 with the resonators deleted and it screams, around 550 hp. I must admit though, our IS has a very good and highly refined sounding six, such a great car.
And to the v10 comment.. Maybe the dodge viper and older ford trucks don't sound too good, however the Lexus LFA/Carrera Gt/E60 M5/Gallardo etc. v10's sound absolutely fantastic.