VVDI MB VAG Tool is not a clone from Diagspeed, X-horse engineers developed their own algorithm also they have special dedicated server for BGA calculation and FSB3 pass calculation. With vvdi bga only need at LEAST two calculation for BGA pass and for FSB3 is 100% ok! Other tool need more than 2 calculations .And vvdi server is the fastest at the moment much faster than others , but will wait to se noimmo.
I respect x-horse because they are not like FLY that clone and do not develop nothing . Look at vvdi2 for vag and bmw its more powerful than abrites also what i like with vvdi is that you have poor chance to mess anything with their tool of course need to know how to use it AND READ USER MANUAL!!!
Also support is 10000% ok and very helpful and is quick instantly of course need to syncronise time between your country and china and they have many flash and dumps for backup ,just look at theur cas repair for BMT or vvdi2 it work every time ,yes some kind of mask need over 5/6 hours to repair it online but it worth it and it will work 100% .
I have both vvdi and avdi . AVDI fuck the cas when downgrading.

Have tested it ,half of the functions are still not ok like esl repair/renew , renew nec key still do not work only read ,also ecu and gearbox renew not working also cannot read pass by IR from old EZS with motorolla MCU inside .
Some EZS need gateway to work on bench ,BUT is the most fast tool for pass calculation for ezs FSB3 (w166 etc..) .
Also when you need to adapt used elv after renewed it you also need to renew the ezs !!!! other tool do not need to renew ezs when we adapt a renewed elv.

Best regards !