I bought the components for a SimpliSafe alarm about 5 years ago for a retail space. When I moved out a year later, I didn't need an alarm in my new space, so it went in a box. My sister recently asked me about my experience with them because she was considering outfitting her cabin with a system. I was able to give her the pieces I had and she was able to reuse them and add to them to get a custom system for her needs. There it is: what sets SimpliSafe apart from their competition. No long term contracts, we could start and stop when it suited us for a low monthly service rate. No built-in components that can't be reconfigured or taken with you, so the money invested wasn't wasted. Beyond that, both of us were able to set it up and put the kits together with ease! Such a great company and concept. Will definitely use again!
We use SimpliSafe and are happy with it. I installed it myself and it was relatively pain-free. I've had a few minor issues with the system, but their tech support is good, and I've been able to fix everything with their help.