I have a Reconyx and I can tell you they are worth it. They do have a security feature but it wouldn't keep it from being stolen, they just wouldn't be able to use it if they took it. Like pnut said, get a security box. It doesn't make them theft-proof but it definately would make stealing one much more difficult. As far as pic quality, it is good but the great thing about the Reconyx is the coverage area of the sensor coupled with it's trigger speed assures you will never miss anything.
Blessings........Pastorjim