Hi trbizwiz,
Glad to hear you happy with the xtrons, with regards to the logo, if you go into the menu and look for extra options i think, you can set the logo there.
I believe the password is 126 to access the hidden menu, going forward i would advice getting a USB DAC to further improve the sound quality.
I would also look at downloading an app could Neutron Music Player, have a look at the website for further details.
http://neutronmp.com/
If you want to take it a step further with modding etc, have a look on the xda website,
https://forum.xda-developers.com/android-auto