I think a lot is going to depend on the skin you want and which head is best suited for it. Also male heads may not fit the V-tech/Maitreya neck.
I've used Lelutka, Catwa and LAQ female heads for male AVs with V-tech/Maitreya, but more so for fantasy looks. Tonic heads may be suitable for feminine male shapes but I haven't tried those.
Start with a head that has something you like from the get-go (eyes, nose or mouth) and leave that bit unchanged, then keep playing with the sliders while wearing the demos (even the skin), you'll eventually find your look.