My first S3004 failed, about 12 years of abusive flying. It doesn't have the speed, torque, tightness but they are one tough long lasting servo. You can improve their strength by using a 6volt RX battery pack. This is not over powering them. Look up the stats on Towerhobbies.com. You will see a torque rating at 4.8 volt and 6 volt. For a .60 size airplane, this could be recommended.