whic one is better?
Depends on your use.
Neo is cheaper than Air and I think you can use left or right bud without the other in Neo (not in Air).
Based on what I heard from Community ( I don’t own either of these) Neo is better from price as well you can use each of headset piece independently… life saver for phone calls
Edit - did not read Kumar.sachin’s post… Lol… repeated same content with different words…
I own both, and I find the neos to be all around better for not only bass but also for phone calls. With the liberty air I occasionally had issues where there was a lot of static and the other person said I sounded like I had them on speakerphone. But with the neos, they didn’t even know I was on a bluetooth headset.