Water Fountain vs. Water Dish for cat?

We used to have a sort of "water fountain" for my cat, it was just a water jug hooked up to some bowl thingamabob. I'm not sure how to describe it. Nowadays, we do one of two things: The first thing is get her a bowl of water, and give her that. She'll graciously accept that. The second thing, and we probably ought not to do this, but we let her drink from the toilet bowl. We keep it cleaned, and we obviously flush, but we'll just find her doing it. It can be prevented by closing the lid, but who has time to do that? That's like, an extra two seconds of our day! TWO!