Can anyone help me with home security systems?

I could use some clarity, as I feel like most of what I'm reading regarding home security is either FUD or marketing. I don't trust most of the comments I read online, as almost everything about this seems predicated on creating fear in me so that I'll pay up.

Simplisafe and Frontpoint are supposedly easy (and Simplisafe is quite cheap), but reviews online are mixed, and many people seem to think a self-installed wireless system is garbage no matter who it's from or who's doing the monitoring. Is this true, or is this just stratrgic doubt trying to drive me to a different or more expensive solution? I don't know!

Also, ADT sent me an ad that was a straight up lie. The person on the phone had to guess at how they might be able to stack discounts to even get close to the price I was looking at on their flyer, and the best she could offer was ~50% higher than what was shown, with their higher tiers costing well over double the price in the ad. I politely terminated the call.

My home security needs are simple. All I need is basic protection, and, honestly, I'm less concerned about a break-in than I am a fire. That's what I'd want to make sure I have solid monitoring for. My stuff can be replaced, but my home itself and my dog cannot.

Can anyone help me cut through all of the crap out there and just give me accurate information? What's my best bet?