A friend recommended that I use Shield, and at first I was a bit concerned that I had not ever heard about the company. But after a little research, it seemed like a good choice, and what better recommendation than a friend's.
When I got my alarm installed, I had TONS of questions. I have a split level house, and was concerned that my dog would set off the alarm when he goes up and down the stairs. The technician answered all my questions and addressed my concerns. He walked me step by step through the process of setting up my online account and through the app.
I've already had my alarm be set off once, and I received a call from the alarm company immediately after it went off. The company sent someone to go check on my house and fortunately everything was ok. I was away on a trip, so it was comforting to know that I could still know that my house was protected and that I could have someone check on the house for me.
The whole process was fast and easy. The company is good with answering questions/concerns. Prices are reasonable and they offer a lot of different features. They'll work with you to find the features that will best accommodate your needs and budget.