2002 Impala car alarm questions

I want to get an alarm for my car but i dont know which one is good. I heard that all the "DEI" systems are junk but then again they seem to be working for alot of people. So i am sorta in a bind to what exactly would be the best for me.

i would want it to have the alarm , also i want to have remote start and if possible 2-way paging.

Hopfully somone has had good experience with a alarm with these features.

thanks