If you're a tech-savvy cat owner seeking convenience and advanced features, the MeowWhimsy S7 is your best choice. Ideal for homes with larger cats, up to 33 lbs, who value smart monitoring and remote control via an app. Its 15L waste capacity and low 35dB noise level ensure a clean, quiet home. You'll appreciate the washable tray and lower ongoing litter costs, despite needing 2.4G Wi-Fi for app functionality.

The PetSafe ScoopFree Crystal Pro is perfect for those prioritizing maximum odor control and minimal scooping hassle with traditional crystal litter. If you value a simple, front-entry system with disposable trays that completely contain waste, this is for you. The integrated health counter helps monitor your cat's visits, appealing to owners who prefer a straightforward, less tech-dependent solution and don't mind the recurring cost of proprietary litter.