it was 18 months ago i checked all this out...
it would seem that there are newer cables etc from rosstech, to fit newer cars? work quicker than old cable
newer version of software too, may work on other cars also (other than vw/audi/skoda/seat)
when i got mine, main differences between shareware and bought software were shareware would only show text of first fault code then list the rest as numbers only (usually fairly decodeable from
http://www.bentleypublishers.com/)
also couldn't cvhange any values on the car with shareware. i've only used this occasionally in 18 months
hth, eddie