Good catch, Olie.  You jumped back in to correct yourself before the hi-freaks beat you up.  Nyuk.
The two Alembics I own have cone heads.  I am leaning toward a crown head for the homemade bass I'm working on.
Rich

I think, favorite head design is based on the number of strings.
 
Crown head is tradition of Alembic.
It's still favorite one for 4 strings.
 
Knobby head is fitted for even numbers (6,8,12...).
Knobby with 8 Schaller M4 is one of my favorite.
 
Now, My Favorite is Fan head for 5 strings.
Asymmetrycal 5 posts are under the perfect balance of circle, just like Celestial sphere.
Of course, cloud and hand are also under the sphere.
 
Eiji

The Crown is definitely the king of the classic Alembic look.
 
The Omega Crown and bevelled edges both bring this to a new level of class in a traditional shape.
 
The Dragon Wing headstock is tops for the radical look in my book.

I like a double beveled (front & back) crown.  I believe my in-progress Further sports the first of these Alembic has done.  I also really like the crown with the Valentino mini omega.  
 
Bill, tgo

I think mine is double bevelled, too, Bill.  I only asked for bevelled and never considered the whole front/back thing, but based upon the in-progress pics, it appears to be front and back.

My least favorite is the V head.  Simply because it makes the bass just that much longer!  This is why I'm going with the cone headstock as on John Entwistle's basses for my custom Spyder.
 
Alan

I really like them all, except the V headstock. It annoys me. It actually really depends on the body shape.