C'mon. No one can truly answer a question like that. What's best is subjective at best in this regard. If you currently have a Bluetooth headset that works with it, that's great. Personally, I favor the Jawbone line of bluetooth devices, but I plan to use the one I already have with the 6 Plus I plan to purchase soon. I will also use my Motorola Buds as well as my wired earpieces (the Apple EarPods & Bose IE2s) with it.....