I purchased the Motorola HS850 and Scalla 500 this weekend with the intent on testing these two out myself. Blackberry faulty so the new one should be in tomorrow. I'll test these two headsets and post my findings. I know the HS 850 has gotten rotten results on this board but I have to try it out myself since everyone has different expectations. Not sure my tests will be as conclusive as BarJohns cause I probably won't go through everything he did, as I only expect to use this mostly in the car and in the office, hopefully not in very noisy or windy environments. I'm also ordering the hbh660 to test it out. Would be nice if one of these works well I like the way the scalla500 fits it's pretty comfortable and small.

Will let you know my 2 cents....later in the week.