Each year the National Turfgrass Evaluation Trial rates tall fescue varieties for color, greenup, quality and texture. Quality ratings are taken once a month from March through October. The cultivars listed at https://tinyurl.com/zh456xvv are on our recommended list. There are many more that rated nearly as well and should be considered worthy of consideration. See https://tinyurl.com/2pp59c6d for a complete list of all cultivars trialed. Note that K-31 consistently rates at the bottom. Keep in mind that blends of several varieties may allow you to take advantage of differing strengths.
Though K-31 may still be a good choice for large, open areas, the new cultivars will give better performance for those who desire a high-quality turf. (Ward Upham)