to finish what happened after
this post. the
520 arrived in last friday... without charging i tried it on and it was just a instant fit, almost if like it was made for me specially.. have been using it since and it feels & sounds just great, very comfortable.. and reliable, people i talk to say i never sounded clearer and quite a few said "are you really using a headset ?"
needless to say the Jabra was returned.. and i am keeping the 520.
a guy at work -no Q owner- kept coming to me while i was "testing" all kinds of headsets and he settled for the Jabra -after i had him try mine on- until he heard how enthusiastic i was about the 520, he went ahead and also bought a 520, he said the same thing instant fit, great headset.
9 out of 10 for Plantronics service, and overall quality of products.