Best Bluetooth headset for Siri (iphone SE, 6S, 6SPlus)

Hi,

I just bought an iPhone SE, which I'll use with a Bluetooth headset.

1. The Plantronics Edge, Plantronics Voyager 5200 series, and Jabra Stealth each have a button that summons Siri. But each has downsides for me. Do you know of any other Bluetooth models that have a Siri call button?

2. The Plantronics Edge and Voyager 5200 sometimes chop up audio. Anyone else notice this problem?

Many thanks!