There are mixed home security system reviews on both the company and the mobile app, but most customers seem to really love what they’re getting through this company. Nest Secure makes our list of best home alarm systems partially due to all the neat gadgets that come along with it. While it’s definitely not the least expensive of the DIY installation home security options, at $399 there’s a reason why the starter kit is listed at that price. If you’re someone who’s already using Nest for your home, and you’re heavily invested in what that home automation system can offer, this is probably the perfect security system for you. You’ll even have the choice of whether you want to pay for professional monitoring or whether you’d prefer the self monitoring option that won’t cost you as much. There are multiple entry options to protect everything that’s important to you, and the customer service from Nest is among the best.