Well, I have an S9, and I've been lovin' it... The sounds on E6 is better than any nokia phones I know, and I've known quite a few... On S9 again, they are correct on that one, although I believe it lags due to RF interference... It says on the manual to keep it on waist length, but the funny thing is sound quality is good even if it's below waist, and sometimes there is problems with sounds even if I point the damn thing on the phone itself... So I think it's an interference issue... I've tried it on my wifey's K800i and there's no problem... As yet... I'm still about to test it further... All in all, S9 is a fairly good headset...
Phone: Samsung Galaxy TAB