I have the AAwireless, OttoCast, CarPlayAIbox and now have the new OttoCast underway. The AAWireless sofar has worked best but (especially with spotify) every now and then it drops connection for a second.
The CarPlayAI box takes a LONG time to boot up and is very slow when in use. Also it doesn't respond to well to screen input and scrolling is horrible. Definitely DO NOT get this one.
The original OttoCast didn't work that great but heard good things about the newest one, and as it's also a standalone Android unit i hope it will work better.
I want to use a standalone device as my phone (Samsung Galaxy S22+) is getting extremely hot when using wireless android auto and have it in the wireless charging tray. Especially so when using it to navigate, listen to music and having an app to warn me for speedcams, it will get so hot the phone starts to lag. But well, using it with android auto while it is in the wireless charger is kind of the whole idea, isn't it? So hopefully the new OttoCast will work as advertised but my hopes aren't that high tbh.