Ive installed several basic Alpine headunits that have bluetooth and aux. Got them all at Crutchfield and are about as basic as you can get these days. All have functioned flawlessly and were easy to install.
I never take mine off of Bluetooth as a source. My phone connects automatically for spotify and phone calls.
https://www.crutchfield.com/p_500UTE73BT/Alpine-UTE-73BT.html