Gap insurance will not deter them entering your house either, and I would suggest the blow torch is a bit dramatic and rare. (well I hope so)
Most are burglaries are opportunists, often people always say 'I can't believe how easily they got in and out'.
I would always start with securing your home, Monitored Alarm, CCTV, Sensors, locks and fixtures at least at Secured by design standard or above. Nothing will stop them but most are opportunist so deterring them is the best you can do.
Autowatch does pose a threat of them coming back in but with an alarm ringing, lights on, CCTV pointing at them would they? maybe? If you are in an area with high levels of armed burglaries perhaps its not a good idea to fit it.