I hear things differently. My vocal pitch is pretty good, but I have a helluva time with tuning. Tuners getcha close. Ear gets you 'on'. However, I find I'm always 'choosing a happy medium' when I tune. Use the harmonics when I'm tuned in an open chord and I can get it perfect. THEN, I play a few chords in the key just to check relative pitch and the *&%*&(*&&^%$%$# is OUT. (Done all the 'is it the guitar, is it the humidity, is it the heat, is it the this, is it the that.)

I don't know what the answer is. If you find out, PLEASE let me know.

BTW, that Ryszkiewicz guy who just posted has an amazing ear (to go with his musical abilities--which are quite prodigious).