Are there any functionality differences between Ross-tech and ProDiag?
it all depends on what you plan to do with it. Since you want to recode and clear DTCs and CELs, etc. and want the portability, go with Pro-Diag. If you want serious logging data, etc. go with VAG-COM. with either or, you can recode your locks and do all the other cool stuff with it.
I was more Mac-based...although I had a tiny ThinkPad 240 for the VAG-COM...just hated to wait for boot up and sometimes ran out of juice from sitting around since I mainly use a PowerBook all the time.
Hope that helps.
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ProDiag clears DTC's and code modules. <b>Where do you get the coding?</b> Ideally from your car's repair manual (ie, the Bentley). Also check out the various forums (on here and Vortex). Although they are populated mostly by Vag-Com users, the coding is identical so if Vag-com can code it, so can ProDiag.
~john



