I bought the VW one. Chatting with the support team, they said all of the versions where the same. I might just be how they name the BT connection.
Originally the BT connection did say Volkswagen but eventually changed to Mazda. However, I don't know if that was because of an updated or a reboot.
I'll probably keep the Carlinkit v3 around since there is some hope for a more stable version. Although after this long, I am not sure how wise that is. Might try to go back to 0306 to do some comparisons.
For what it is worth, mine is a 2016 Mazda 3 and I don't use the mirroring feature.
I have a 2017 Mazda 3. Carlinkit 3.0 has been working decently well for me but I'm wondering if the cheerdriving adapter is better. Do you prefer it over the carlinkit one? Also curious about booting time... is the cheerdriving much faster?
Thanks!