I need a scantool which supports standard OBD2 plus ABS and SRS for major automative brands (U.S. and global). AL619 and US703 seem to be the two mid-price Autel scantools that support those features . But some descriptions of US703 say that it only supports GM, Ford, Chrysler ; What about Jeep, Hummer, Saturn, Toyota, Nissan, Volvo, etc. ? US703 is no longer listed on the Auteltech.com website, so perhaps it is discontinued ? What are the differences about AL619 and US703 ? Is it recommended to avoid US703 because of functional limitations and end of Autel support ? How are firmware / software updates done ? Updates are no charge during year 1 ? What is the support / updates cost after year 1 ?