Diagnostic devices for VW AUDI, which are best?

Did not find anything about search, if necessary someone has a further leading link for me ? – Dear Notebokk with software ubd USB/CAN-BUS adapter ( WIN XP WIN 7 WIN 8.x WIN 10 … suitable ?) – Or “Fertige” All In One devices ? I am now looking for a diagnostic device, which allows me to perform the error codes with a short description of the possible cause and the reset/delete of the displayed errors. To do this the device should if possible for VW Passat and Audi A 6 series up to approx. BJ. 20 I already have a USB/PC plug (from SKJ or the like) with ancient software in Lite version on an IBM Thinkpad T42.. but that’s what in front “Ar###”. I don’t do it professionally, need as no professional case with all “Dongels, Dingels, Dangels and other cables”, but only for named vehicles. I don’t want to tune, tacho reset or reprogram or the like, but the read out and reset of the error messages should work 100%, without if and if But. Whether a software/notebook solution ( notebook and USB/CAN adapter) or such devices as: 1) AutoDia S101 ? 2) OBD-509 diagnostic device “Code Reader from Berlin “? 3) VCDS software buy, also usable with WIN7/81? 4) MaxScan VAG405 … 5) iCarsoft i908 … 6) VAS 5054A diagnosis with OKI chip diagnostic device 7) Scanner T55 OBD II VAG diagnostic device… other ?