I bought the Tabby package about 2.5 years ago when my older cat was a kitten. I don't know how I ever did without my Cat Genie. I had a couple of problems with my CG60, but with a simple call to customer service, the issue was resolved quickly and effectively.
When we moved we saw that CatGenie had a new upgrade and as opposed to moving the old machiine, we chose to buy the 120. I have never been so happy. The cat activation is awesome! I was always nervous about setting my 60 on auto because my cat doesn't have a consistent potty time, but with the cat activation I don't have to worry about wasting washes. A longer cartridge life is also a plus. I will never go back to any other type of litter.