I voted realistic, but really I'm inbetween. I don't want ultra-realistic sims, never have. But I prefer non-clay hair, real eyelashes, body hair that doesn't look like it was drawn on with a marker. The world have real grass textures and not the smeary stuff that TS4 shipped with. I want my trees to look real and not like fake plastic. I also would prefer the objects to have more detail, actually meshed detailing rather than faking it with painting the details on.
I'm so over the doll house vibe of TS4, I have never, ever embraced it. I actually liked how things were done in TS3. The sims were still cartoony and didn't look "real" but the environment and objects were much more realistic.