I've installed two remote starts in two vehicles I've owned.
First thing first, I would check if that particular model year has a FACTORY remote start option. If so, I would see if it's not too much of a hassle just to buy that and install it. If you are lucky, all the wiring is there and all you need is new remote controls. It could be as easy as a a few connectors that are just not hooked up...
If that isn't an option or it's too expensive, the Best remote car starters I've found are made by a company called DesignTech.
http://www.directed.com/
I think the name of their starter is called "AutoCommand". They are based in PA and it's supposed to be a American Made product.