Monster girls...I guess?
In the end it really depends on the girl though.
I mean, no matter how much you love cat girls, even if you're desperate and that's the only cat girl in the world, you wouldn't...just no.
Monster girls all the way, but specifically the sub-type of 'beast girls' the kind seen in SPg and SG and the Jingai Shunman series. teh ones who actually look like a cross between a monster of some sort and a human, not 'monster' girls in the sense of female versions of classic rpg mobs (harpies, succubi, lamiae, centaurs, ect).