Well, I admit we were disappointed in the LitterMaid. The boxes of waste were gross and filled up fast, the rake seemed to need frequent cleaning, cleaning the box out completely at least every 6-8 weeks was a nasty job, and the motor broke just after it was out of warranty.
CatGenie looks interesting. (I'm such a gadget fan! ) At 300 bucks a pop, though, I'll be looking up more reviews (I didn't read through them all yet on Litterbox Central, nor have I looked yet on Amazon or similar).