Honestly, it depends on what kind of music you listen to. For my needs Sennheiser has been excellent. A lot of their older models -- which still have phenomenal quality -- are heavily discounted on Amazon.

Parrot Zik 2.0


Beats Studio Wireless came in second for me... the bass wasn't as crisp and clear sounding and the noise cancellation isn't as good as Parrot Zik 2.0. However, the Beats Studio Wireless were $20 cheaper.

I had Bose previously and they sound like garbage compared to the two listed above. I will say I like their in ear inserts a lot as they are the most comfortable ear inserts by far...but the sound is garbage...no bass sounds trebly like whew