Best Alarm for Quality and Price...

Hey guys I know the 5th gen ludes come with an immobilizer system and I wanted to know how different it is to an alarm...I'm getting I '98 lude and wanted to know which is the best alarm to go with thats worth the money and not that expensive.Plus also how do u get something wired to your cell phone I heard so when your car goes off you can go check it out and it lets you know because in most cases your too far from your car to hear it depending on how loud the alarm is...I'm serious about getting an alarm put in as soon as I get the car because I know the east coast loves to steal the imports.
Thanks.
How does price range and which manufacture is best?