BMW M5: E39 vs E60 vs F90. Which makes the best noise?

The new BMW M5 is here, complete with a 592bhp, four-wheel-drive powertrain. TG's Jack Rix takes a closer look inside and out at the new super-saloon.

He also poses a hugely important question: which one from the E39, E60 or new F10 makes the best noise?