I just ordered these headphones...
Avantree Audition Pro:
https://www.amazon.com/gp/product/B01A0EAYDI
And this Bluetooth transmitter...
Avantree Priva III:
https://www.amazon.com/gp/product/B01N5KKUR0
The Avantree Priva III Bluetooth transmitter is really good for one or two pairs of Avantree Audition Pro headphones, in case I want to get another pair.
Eventually, we'll see if I'm happy with these upgrades.
I received these items yesterday, and opened them today.
The Avantree headphones have none of the problems that the TaoTronics headphones have.
I absolutely love them.
The Avantree has plenty of bass with "bass boost" off.
With "bass boost" on, it probably has too much bass for many people, but it doesn't bother me so far.
It sounds just fine.
The stock ear pads seem to be very comfortable, though they are a little bit on my ears.
I have some Brainwavz sheepskin ovals that I'll put on if I feel the need, but so far the stock ear pads are good enough for me.
If I wouldn't have liked these headphones, I was going to give up on Bluetooth.
I would also have to return four items to Amazon instead of just two.
I was not looking forward to that.
I really am surprised at how much I like the Avantree headphones.
I thought they would have some of the same problems as the TaoTronics pair.
The Avantree headphones aren't for everyone (no headphones are), but they check all the boxes for me.