rosstech for the real deal. u can logg and clear codes and do alot of other great things. I think they have a vagcom section on the top section.
If u want to go the cheap route u can get a elm32 bluetooth scanner from amazon. that will read the codees and clear them but u wont be able to log.
U can also get vcds light and a generic cable off ebay for under 30 dollars. That will allow you to read codes but no clearing then.

 

Awesome, thank you!