People say that the Audi RS5 B8.5 with the 4.2 naturally aspirated high revving V8, is the best sounding V8 ever. Especially equipped with the Capristo exhaust and AWE Tuning downpipes as here. Well, going up against a Stage 2+ 750hp RS6 C7.5 Avant and it's twinturbo V8 in a short sound battle.
Individual detailed videos about these:
RS5 -
RS6 -
Thanks for watching!