Pros Great Call Quality, Easy to Pair, Easy to Use
Cons None so far
Summary I have had numerous Bluetooth headsets over the years - a Motorola, 2 Plantronics, 1 Jawbone, 2 Q2's and now a Q3. Without question, the Q3 is the best I've had with my iPhone. The Q2 was a close second. The Plantronics Voyager HD had trouble keeping connected to my iPhone after short usage (I think this is an iOS issue, as my Android friends don't seem to have that problem), the Jawbone sound was inconsistent, the Motorola was just crap. My only complaint with the Q2 was I kept losing it.
The Q3 has proved to be an excellent unit, consistent sound and call quality - even when I have my phone in my back pocket. Easy commands to use. Works flawlessly with Siri. Battery life is excellent - found it to actually exceed the 5 hours advertised. Sometimes I wonder if certain manufacturers work harder to make their products more compatible with one operating system over another.
I normally find CNET's reviews to be spot on - this time only 3 stars is a little harsh. Maybe you got a bad unit, as the one I have is the best Bluetooth unit I've had - EVER.