There is no definitive answer to this question as the two types of grasses have different benefits and drawbacks. Ryegrass is a cool-season grass that grows well in temperate climates, while fescue is a warm-season grass that does well in hot, dry climates. Ryegrass is quick to germinate and establish a lawn, while fescue is more drought-tolerant. So, the best answer to this question depends on your climate and the specific needs of your lawn.