Post your vehicle security solutions.
I worked in car audio, alarms, remote starts for eight years. Bottom line as stated before, you can only deter theft, not totally prevent. The satellite solutions for tracking for after the fact are your best bet for recovery. Geo-fencing options are nice. You can couple the sat tracking with a basic security system (door triggers, starter kill, hood and trunk triggers). I recommend either skipping the impact sensor or setting up very insensitive and skipping any perimeter sensors. These two items account for 90% of false alarms. There are digital tilt sensors which readjust when activated to account for parking on inclines and help to alert if the car is being jacked up for rim removal. The old mechanical ones were not very good. Another item to consider is a batter back up siren. If someone cuts power, it goes off. However, we often disconnect the batteries for our cars so don't forget to disarm the siren with the key. This siren can be used with or in place of the normal siren.
Personally I do not have any security on mine. I have it insured for more than I can sell it for. Depending on where I am at, I either lock the doors and roll up the windows, or just leave the windows down and leave it unlocked. Keep the tools in the trunk.