Ring Alarm Pro 8 Piece Kit leads with 8 components including 4 contact sensors and built-in eero router covering 1500 sq ft per grounded facts, beating Simplisafe Essentials Kit's 4 components and 3 entry sensors at $260 MSRP. Simplisafe offers better entry price but trails on sensor count and networking integration. Ring wins on feature depth for whole-home setups.