This will depend on what you’re looking for, but here’s a good analysis of each to help you with your decision. Choose ADT for a provider who has a well-known reputation, and if you want a lengthy trial period. We would recommend Vivint if you’re looking for unique equipment and don’t mind paying more for your equipment. If you don’t want to pay anything upfront for your equipment and would like to have a locked monitoring rate over the life of your contract, we’d recommend Protect America. For access to Bluetooth arming & disarming, we’d recommend Guardian Protection. And finally, if you want flexible installation options and access to Google Nest’s security system, we’d recommend Brinks.