I listen while charging all day at work. I have bluetooth in my car but in 2016, the kia soul still has crumby bluetooth quality. i have some lg tones and the quality there sucks as well. I use aux in my car while charging. I could play though usb with the lightning cord, but i dont want to have to mess with the radio and phone syncing with one another. I just want to play from my phone as a standalone device like i have for the last 6 years.
I'm not railing on the new phone however, I was waiting to see the 7 before I upgraded from my 6s to the SE and now i am completely confident in that purchase.