Looks to me like the height export is sharper, real test would be to see if there is any visible difference in the final product either in painter or unity (preferentially unity) if one looks better in your opinion just go with that option. As Jerc pointed out they just get doubled up so whichever one you prefer lookwise…
@Snefer: Yeah, I had some issues as did a few others with Modo -> Unity on the Luxology forums. http://www.polycount.com/forum/showthread.php?t=79254 Maybe it was a UDK or Unity thing rather than a Modo issue which somehow got cleared up with time and updates. I haven't been keeping up with either UDK or Unity so I…
Add a mouth cavity and impression of teeth. It will get better instantly. her chin and her nose are too sharp. I know you try to make them as narrow as possible, but don't kill the initial shape. The chin and the nose have to get some wideness. They're not sharp objects. 3. The eyes should have eyelids. PS the head doesn't…