I just replaced my HS-820 (which I thought was great to begin with) with a Plantronics V510 on my 7250 and WoW. First thing I had to lower the volume, second the fit and comfort, third the clarity both ways, in a nutshell, Plantronics V510 is the way to go no questions asked.
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BB Tour 9650
Running OS 6.0.0.524
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