Recommendation for a vag com reader
 

Greetings. I am looking to purchase a scan tool or VAG COM reader for both my 2005 Audi TT 3.2 and my 2008 Audi a6 Avant Quattro. Have heard good things about the Schwaben scan tool from ECS tuning. Want to be able to read codes, release brake calipers to work on rear brakes, service reset, etc. I don't use Windows machines so the Ross Tech may be out of the question. Thanks and best regards.