Hammer wrote:I did a bit of search and found some great offering from Mongoose -
http://www.mongoose.com.au/ - as I too am looking at replacing the aftermarket system in my NA8 (which was installed by the first owner).
The Mongoose look like good quality products. They even have OEM replacement GPS/Audio unit to cars with unique audio interface (like the current Mazda's these days). But I think they're only in Sydney and Brisbane.
Years ago I once worked at a car audio business which sold & installed Mongoose car alarms. IMHO they make quality alarm systems to a reasonable budget. They're an Australian company so their alarms all meet Aus immobiliser standards (important for insurance). Someone can correct me if I'm wrong, but I seem to remember other common USA alarm brands on the market do not meet Aus immobiliser standards so they're not recognised by insurance companies should you declare your car to be fitted with an alarm to get a cheaper premium. I highly recommend Mongoose and I'm sure their website can direct you to a local dealer/installer.
Of cause, if you want to go all out with an alarm, check out Brant Car Alarms -
http://www.brant.com.au. These guys are considered one of the best and make the PIN keypad equipped anti-car jacking alarms. Back in the late 90's the WRX was the ram-raiders weapon of choice. So many were getting stolen that Subaru Australia decided to install Brant alarms in all future WRX's, fixing the problem overnight. Brant alarms are not cheap, but I'm pretty sure their prices include mobile installation.