I've worked in the Access Control, CCTV and Life Safety business for 30+ years. If I were going to buy an off the shelf residential solution, Simply Safe would be my first choice. I installed my own system using a Bosch/Radionics panel and mix of hardwired and wireless commercial devices. My system is monitored by a local alarm company. I've also built/installed a NVR running Milestone VMS and supporting 8 Axis 3MP cameras. 5 cameras outside and 3 in the house, all set for record on motion. The alarm company can access via a secure hardware walled off VPN.