I've got the Scorpio SR-I500SE alarm.
Scorpio Alarms » SR-i500
Looks like they have updated it a little.
It's got dual stage perimeter sensor, shock, tip and I also got the engine kill feature.
The pager function doesn't work really far, but enough to have coverage within a house or small building.
One thing to note: If you want to use the anti-highjack feature, which I've tried while the bike was on sidestand and it's BLOODY AWESOME, don't have the keypad/receiver on your keys. You need to keep it in your pocket, so if the day comes, Mr Jacker can take the bike and you can still press the buttons. He then has 20 seconds and the bike shuts down and the alarm goes off. THe trick is having it kill the engine when he is in mid turn at a high rate of speed.