I wish to buy Johnson 8hp, 2 stroke or a 4 stroke, but dont know which one.<br />I have two basic needs in a motor. <br />(1) The slowest possible speed; Which one operates at idle with the slowest forward movement? Does the prop selection will make a difference with this small of a motor.<br />(2) Sound; Which one is the quietest at idle? And is there any real, noise level, difference?