A friend of mine who usually spends his life doing sales pitches around the country, and who has been hit more than once, decided to go with with security in layers.
After the alarm, CCTV, and monitoring system, he installed roll-down shutters on the outside windows and doors to minimize window break-ins. The door to the garage has not just a lock, but can be barred from the inside and also has a roll-down shutter in front of the door. This is used on vacations so when he leaves, if burglars get access to the garage, it won't help them get inside, as if they manage to pry off the rolling door, there still is a metal door that has to be kicked down. The garage door has a battery-backed up electromagnetic lock installed on it, and when he is not on vacation, he presses two buttons to get inside. One turns on power to the garage door opener and deactivates the lock, the other is the normal garage door remote. This way, someone who manages to snag the manual release rope still will be unable to open the garage door due to the lock on the inside.
This is, of course, a bit extreme, but because he is out of town for most of the year, his place is not occupied for a while. Even his A/C unit has been smashed apart for the compressor's copper windings more than once, so built a steel cage for the outside unit, then built a brick/stone fence with a heavy gate around that, with a camera recording that area.