using paradox also. installation done by MMC. service was pretty good - they did a lot of finetuning and the system is really complex. so many things you can set i think i still dont know how to harness its full potential. its very very reliable, no defects so far. just one small problem in the past years where i called the importer and they fixed my setup on the spot (no charge, mind you). i especially like their petsafe perimeter sensors. once setup properly, you pretty much never have a false alarm. only once or twice a family of musangs triggered it. can link to security company, make the unit call you or your balai polis around the corner....

i think personally i'd buy it again but it's indeed one of the pricier options.