Thanks you two.
My av is a tomboy, yet not very androgynous - just not typical "pretty" facial mathematics. So far, none of the female mesh heads are right for her (that's not her face shape in profile photo). Unless it's custom, no mesh head will ever resemble her system face, which is what everyone runs into, but there's little deviation from type with both male and female heads, so I figure some mix'n'match via crossover is in her future.
Thanks again.