Data reported previously suggest no differences in yield or fiber quality performance are evident between transgenic and conventional varieties. However, growers, consultants, and the mill industry continue to express concern regarding the adaptability and acceptance of transgenic cotton varieties. Our data indicate no consistent trends for lint yield, staple length, fiber strength, or micronaire with regard to technology type, which supports previous work. While some trends could be detected for some parameters when averaged over years and variety families, the ranking of technology type was not consistent when data were averaged by year and/or by variety family. The ranking of technology type for all parameters differed slightly between data averaged from Delta and Pine Land Company Agronomic Service Trials and data from the state university official variety trials.