I have an Apex Destiny 6100 at my home:
http://www.security.honeywell.com/hs.../ap/11796.html
If you can find a place to buy one I highly recommend it. IMHO, unless you have a cellular backup you are wasting you time if you actually want to catch someone who breaks in to steal something.
The Destiny interfaces with X10 automation modules, allows microphone connections for remote listening, and also allows you to connect with your phone to listen and talk to someone in your home. It's a very popular model with Turnkey parents.
DT