Best Bluetooth FM transmitter

[Android Central Question]

I have an old car with no Bluetooth. I'd like to play music through my phone. I'm looking into a Bluetooth FM transmitter. Any advice on which one works best with pixel phones and has the best audio sound quality. Looking for one I do not have to crank the volume up to be able to hear the music. Also one that the mic works good as well.

There are so many on the market not sure which to choose

Mel
Pixel 2 XL