Bests & Worsts Reviews from Amazon

Pros: Comfortable; you can almost forget you're wearing it. Consistent connection; unlike a few of the reviews here I have not (in a couple of months use) had the headset lose connection to my phone. Quality sound; clear on both ends. Cons: Frankly, none to speak of. Volume control takes a little getting used to, but it not really a problem. I'm ordering another M55 today for my wife. She has never found a headset - either bluetooth or corded - that she was comfortable using for any period of time. She has 'borrowed' my M55 enough that I am just going to quit trying to get it back and buy myself another one. I guess that's a con - I wish the M55 came in multiple colors so we didn't have to find a way to mark them once we have multiples in house... :-)