i watched a couple ones, and i think i pinpointed why the silicone ones specifically creep me out more. it's the way they flop around. i mean, i used to cart the niece around when she was an infant and she never flopped like that. it really looks like they are playing around with a corpse or something.
THAT'S why im getting squicked out. floppy dead baby dolls. *shudder*