HVI fiber test data did not predict the spinning performance of these two cottons whereas individual instrument did. Yarn quality from bale lots is consistent irrespective of spinning system (ring or rotor) or preparation (carded or combed). The superiority of El Dorado is evident throughout. Yarn quality is consistent and shows the same level of difference for micro-rotor (75g fiber sample) and micro-ring (50g fiber sample) spun yarns. Micronaire values were 0.5 units higher for El Dorado Acala than for Acala Maxxa.