Originally Posted by jfe
I don't think it makes a difference.
The Cardo has been working very well for me, maybe the more expensive Jabra sets are superior, but for the price that the Cardo has, it's a very good choice.
So far

I just ordered the Cardo Scala 500 and hopefully my wife will like using it. If she doesn't, I might take the headset along with her Treo 650 and use it for myself.