Some of the Russian turboprop transports that operated in and out of Zaire made one hell of a racket but the dirty exhaust smoke lasted longer than the sound did. I got to be rather fond of the AN2's ASz621 engine clatter that we operated. Twas a metric version of the R1820 Cyclone and it had the pleasing whine of inertia starters.
Radials always do it for me, even the 9-blade pre-start turn over by hand.