Had good luck with Moto BT in the past.
This one is the most expensive I have had regardless of brand.
I like how you just flip the end to turn it on. It instantly paired with my HTC ONE.

Unfortunately that's all I liked as the audio was very muffled on both ends. Callers had a hard time understanding me.
The call/answer button is on the end and hard to push. You need to brace it with other fingers to press it. It should be on the side.

For as long as BT technology has been out, you'd think that audio quality should be excellent as a given. A $20 one should sound as clear as a $150 one. You should only have to pay for features.

I've tested Plantronics Marquee2, M55. Blue Ant2, and now this. This is probably the worst sounding out of the 4.
Had good luck with Moto BT in the past. This one is the most expensive I have had regardless of brand. I like how you just flip the end to turn it on. It instantly paired with my HTC ONE. Unfortunately that's all I liked as the audio was very muffled on both ends. Callers had a hard time understanding me. The call/answer button is on the end and hard to push. You need to brace it with other fingers to press it. It should be on the side. For as long as BT technology has been out, you'd think that audio quality should be excellent as a given. A $20 one should sound as clear as a $150 one. You should only have to pay for features. I've tested Plantronics Marquee2, M55. Blue Ant2, and now this. This is probably the worst sounding out of the 4.