I have been using a Jawbone prime, it was a good headset. Comfortable to wear and the noise assasin technology was great. But I recently have been using a plantronics m155 marque and its also fantastic and has a few extra features that I enjoy. It shows the battery meter for the headset on the iphone next to the phones battery icon as well. Also the m155 will play music and any audio source through the headset which is nice.