What they said. Arduino's stuff is excellent, particularly considering the relative lack of polygons in the nether regions of any of the meshes. Either Satanica's tool or the G4 for men is well worth the cost. The Digiport tongue takes a little work to get a good effect, but has far more flexibility that most of the tongues that come with the characters. Up until the G4 and Satanica genitals, all I used was the Digiport Digenitals. Not as versatile as the newest things, but still versatile in its own right.