Me too. So these two options are good but simplisafe does not have glass break sensors. According to their current customers, they've been sayning "soon" for their availability for a while now.
I'm leaning towards the Lynx 'cause of that.
Actually that information is old. I've also been researching alarm systems lately and SimpliSafe just came out with their glass break.
http://simplisafe.com/alarm-sensors