can only amplify the positive responses. Insist on manuals on CD. When you have them take time to learn how to use them, and follow the troubleshooting to the letter, even though at times using brain and schematics you cant see where they are going. several times I have not been able to follow where the 330 tsm was going but it fixed it !! I have been workiing Busses for the last five years 320 + 330 along with 737, 747, & 757 and there is no comparison Airbus is best but you have to know how to work the manuals and they only work properly on a pc