Another vote for the 85 f/1.2. My camera generally has this lens or my 35mm mounted on it.
Sooooo very true. If the OP is wanting something more versatile than just a head shot lens, the 35L is by far our most used lens. When I have executive head shots, the 85 is a no-brainer, however, for a wedding, engagement, or simply capturing the kids, the 35L is there for me. Food for thought, potentially.