Got a Vgate VS-450 a Chinese reader.
Is it cheap? Yes
Is VCDS better? Yes, for sure! Because the VS-450 can read the most item's, unfortunately not all (did I say it was cheap?).
It is small, and easy to use, just plug it in and press buttons intuitive and away you go (very handy for me, I'm not that handy with pc/laptop which is required for VCDS, although I recently saw a "mobile version is available).
Is it rubish? Well, it's cheap enough to leave in the trunk/boot of the car.
It allows me to reset oil/service light after I did an oil/filter service.
And the best is, it's always with the A2...... So if you've got a "light" on your dash, well maybe you want to know more about it and the VS-450 is giving you info.
So, it is for sure no replacement for VCDS, but if you drive a car with a diagnose system then you can let a dealer do a read out or get a cheapo read out thingy and know what's going on instant. You decide yourself if it's worth something or nothing.
Cheers.