Well I just purchased an Avital 2100 made by Clifford and I'm super happy with it. It was like $305 Canadian Installed. That was with Starter Kill, door locks, and flashing park lights. I was pretty happy.
In all honesty you don't need to spend a lot on an alarm as a thief will see the blinking light and move on in most cases. They'd rather break in to a vehicle if it doesn't have an alarm than if it does have one.
Just my

Sorry to hear about your ride; nothing worse than feeling violated. Thank goodness both of our vehicles sit in the garage at night.