I do choose personality over looks because there's no point in the realtionship if you're attracted to someone because they're good looking but turn out to be a total slut who doesn't really care about you, that only leads to heartbreak. I'd rather have a sweet and caring girl than a fake.
However I do have to agree with above, looks do come into it because equally if you don't have the looks there you won't be sexually attracted to them which can bring the relationship down. So
yeah I go for personality but looks do defo play a part in it.