My partner can't stand any of the SOGA models, for various reasons. One of the most pronounced reasons, though, is that in many cases, there are fewer overall options (the Barbarians' Age slider doesn't exist on the SOGA side, for example), and the options that are there tend to be less varied. She uses the eight-spoked spike hairstyle on her Dark Elf Shadowknight (female), but there aren't any SOGA hairstyles that are anywhere near as interesting.
As for myself, I think that many of the SOGA models look... odd. My Half-Elf Ranger stands with his arms akimbo, like he's practicing to be a gunslinger, and while the SOGA version doesn't look as fruity as the original model does, he DOES look more like some sort of bishounen.