Matt,
From what I understand, most of those alarms are all made by the same few companies and there isn't a whole lot of difference except for accessories. I have some knock off of a Viper, it has a snake on the box, don't remember what it is called but I got it installed w/ door lock actuators for under $250 locally.
If you are in Tuscaloosa anytime soon, check out Kincaid TV on 15th st and talk to Lee, he'll steer you right and make you a deal as well. I've known him for 20 years and he is a top notch guy.
