You mention that all headsets you have ever tried/reviewed are tinny and dont sound as good as having the phone next to your ear.
I suggest you try the Jawbone. www.jawbone.com
I bought into the marketing hype of this phone "Developed for the US military with state of the art noise reduction" etc. I gave the headset to my partner who used it on long motorway journeys, and her car is pretty noisy. Each time she called, I had to ask where she was, all I could hear was her voice with no background noise.
She also reported that the earpiece also blocks out amplification of background noise, thus when I was talking to her, she could hear me more clearly too.
Give it a review ... see what you think!