"I used my 590a for 19 months with zero problems"5.0 starson by jlysic
Pros: I work often in noisy environments and the fact that I can hear my calls in both ears is a HUGE benefit to me. In one case I set my phone in the grass outside the building I was working in and worked on equipment inside the building with this headset
Cons: no cons that I ever ran into - wish it came in a model that offered longer range for more $$, I would pay it happily.
Summary: Love this headset, I accidentally broke mine so I am buying another. I have used many bluetooth headsets for my phone and only this one has survived. No other headset that I have tried offers telephone audio in both ears like this one does.
Volume level range is excellent so that I can crank it up in noisy areas.
I even wear this at the golf driving range while I am listening in on long conference calls. I can hit golf balls and listen to the call at the same time, stopping every now and then to offer my reports during the call - how cool is that?
The range is consistently around 30-35ft which is better than any other I have tried.
Call quality is always excellent, I have never had a complaint in 19 months.
At the gym I leave my phone across the room and listen to Music from my Blackberry and if a call comes in I simply touch a button, take the call and then when I hang up the paused music starts right back up.
No other headset on the panet can touch this one, I have tried.