Vivint here, going on about 5 years
<span style="font-family: courier new,courier; color: #800080;">My words of advise:</span>
<span style="font-family: courier new,courier; color: #800080;">Know going into it what you want. Home Security systems are now being combined with Home Automation. You will pay more for a system that does both so if you never think you'll want automated locks, lights, thermostats, etc. you will likely pay less per month if the system doesn't have that capability. If you think you'll want some of those things down the road you can get the equipment now and turn on those features as you need them. Most of the companies offer a cafeteria plan in this area.</span>
<span style="font-family: courier new,courier; color: #800080;">My experience is however, that the combined systems aren't doing home automation all that well yet. They are getting there but slowly. If you just want to turn on some lights at sunset you can do it. But if you want to turn them on at sunset, only on Monday through Friday and only when this particular motion sensor gets tripped, then you'll want the separate Home Automation route.</span>
<span style="font-family: courier new,courier; color: #800080;">Just understand what your needs are going into it and you'll be fine. It's kind of like buying a computer. If you're just going to browse the Internet 4GB RAM will do you. If you're a gamer you can't get enough RAM. Problem is if you buy a computer today that will only max out at 8GB RAM you'll be replacing it down the road if you get into gaming.</span>