In the past three decades, home security systems have prevented thousands of break ins and burglaries. More and more people are buying home security systems to protect their homes, families, and personal possessions. So when choosing a home security system, what company is the best for you?If you don’t buy the equipment outright, Vivint requires either a four or five year contract — a long time to commit, especially given that you only have three days from the date of install to cancel. Afterwards, you’ll have to pay out the remainder of your contract. If you may be moving in the near future, it’ll cost you $99 to take the system with you. You could alternatively renew your contract, but then you’d be locked in for even longer. Vivint will waive any cancellation fees for extenuating circumstances like death, military circumstances, bankruptcy, or a move to assisted living. Still, it’s best to be intentional if you decide on Vivint. ADT doesn’t have the strongest customer service reputation among the companies we considered, racking up more than 3,000 complaints on its Better Business Bureau page. While we chalked most of this up to the fact that ADT has several million more customers than its competitors, our tester began his call with low expectations. He was pleasantly surprised, saying, “My needs drove the conversation.