Self-Cleaning Litter Boxes

I was wondering if anyone here has them? The pro's and con's of them... and hopefully recommendations?

The Found Cats have one, they sit and MEEEEEEEEEOOOOOOOOW until I come along with plastic bags and a scoop!!!:eek::eek:

LOL, that was good Gary!! :D

I do not have one, but a friend does and she loves it. Her husband has had it for years. He is a pilot and so when he was gone on trips (this is before they got married) the box stayed clean. They kept it even after she and her daughter moved in. She doesn't have a bad thing to say about it. Unfortunately, I do not know what brand she has. I liked the ones that hook up to the toilet, but we do not have the space for one of those in our bathrooms.

Look at the different brands on line and then read reviews.