Cultivar selection is a key component of profitable cotton production because the chosen cultivar must have the genetic potential to produce economically sustainable yields. Cultivar selection has become an increasingly complex decision as genetically engineered "transgenic" cultivars have become available and some old favorite conventional cultivars have been phased out. Making cultivar selection even more difficult is that the necessary trial data to select cultivars has not always been available to growers, and products have been offered for sale without much or any public testing. The purpose of this presentation is to examine grower concerns about how Roundup Ready™ cultivars are tested in the public sector, assess validity of Official State Cultivar Trial data for purposes of cultivar selection, and emphasize how to get the most out of such data.