Should we try a bit darker blue color? Also I like the fading effect, but it should not be totally white at the top, a liitle bit of brightness/glossiness/brilliance could be interesting.
Your logos are really good. I was wondering whether it was a good idea to have a mini logo like DZ with a stethoscope (maybe with the stethoscope around the DZ' neck?) which can also appears at the top of the browsers tab (you know of currently inactive tabs. So to have a broad logo DANIEL ZICKLER like the ones now, MEDICINE WITH PASSION underneath and on the left DZ with the stethoscope. More or less like Michael Hyatt.
Pretty cool, I like the blue logo better than the white one. About the stethoscope: May be a little complicated but I thought that it could kind of hang around the neck: Imagine DZ is a head/neck and the stethoscope is hanging around the neck with the earpart on the left sideand the other thing, (whatever you call it) on the right. Maybe too complicated, don't know.
The righ tpart is perfect, but I think my stethoscope-around-the-neck-idea wasn't all that great, I Think the earpieces should surround the DZ. Maybe you can also try a white backround?