DIY home security systems. Whatzagoodone?

I've been looking at security systems on Amazon.com. Something we could install ourselves, and not have to pay monthly fees. This one looked like one of the better ones:


AAS-V700 Wireless Home Security Alarm System Kit DIY (R)

Product Features

* Comes with 3 horns which is essential for any alarm system (one outdoor for your neighbours to hear and two indoor for yourself)

* 99 Zone Display Wireless Security System (Supports an unlimited number of sensors per zone),provides the most extensive coverage.

* Two type passwords. administrative password allow to program and operate the system. user's password only allows to operating the system .

* Four types of defense zones that offers enhanced accuracy and alarm capacity: emergency, arm, home arm

* Auto-Dials up to 6 phone numbers when alarm is tripped w/redial ( plays personal recorded outgoing message). self monitoring. no monthly fees

Technical Details

* Comes with 3 horns which is essential for any alarm system (one outdoor for your neighbours to hear and two indoor for yourself)

* 99 Zone Display Wireless Security System (Supports an unlimited number of sensors per zone),provides the most extensive coverage.

* Two type passwords. administrative password allow to program and operate the system. user's password only allows to operating the system .

* Four types of defense zones that offers enhanced accuracy and alarm capacity: emergency, arm, home arm, door chime and specially engineered false-alarm preventing mechanism.

* Auto-Dials up to 6 phone numbers when alarm is tripped w/redial ( plays personal recorded outgoing message). self monitoring. no monthly fees

* Multiple sensors to meet your home and business security need. you can always add more sensors to your system.

* Phone Line Anti-Cut Monitoring (Alarm sounds if phone line is cut)

* Rechargeable Backup Battery (Built into the keypad/control panel)

* Programmable Entry Delay (0 to 30 minutes)

* Programmable Exit Delay (0 to 30 minutes)

* Programmable siren time(0 to 30 minutes)

* Audible or Silent Alarm Mode

* Power & Armed LED Light Indicators

* Zone LED Light Indicators

* Remote Access By Phone Features ( Arm, Disarm, Monitor Mode)

* Easy install, no professional required. no installation charge.

* Reset to Factory Settings

[...]

This brand has high ratings on Amazon. But then I saw this in the comments:

[...] The seller is rebating $20 to everyone who posts a 5 star rating. Not ethical. I have not considered the rebate when I posted a high rating - the product is worth the money.

I had noticed that a lot of the five star reviews did list complaints or criticisms, which made me wonder why they gave it 5 stars anyway. Now I know why.

So is it worth the money? Who knows. So far it sounds like the best thing I've looked at. But buying electronics is so tricky nowadays, you just have to wonder about the quality and if it's going to last.