Probably effective for mirroring - However the Mini requires zero mods and can be take across cars by simply unplugging it.
Unable to compare without a proper cost comparison. Since Exploter is on Amazon USA as well you get quite a lot of protection as well.
It's also Native playback on the mini rather than mirroring which takes away latency - that being said if this works for a user, power to them - a solution is a solution :)
EDIT: Sweet hell - its $350... I think ApplePie is the better contender in this case
https://www.amazon.com/Wireless-Explotec-Applepie-Qualcomm-Bluetooth/dp/B09JYJW43X
You can get the APM for as little as 190$ if you order from Exploter directly now, Amazon has a mark-up probably due to returns and protection it gives you