I had an aftermarket starter (Viper) installed. It is two-way and works within 2000 feet. The two-way tells me when the car is starting or stopping, the temperature inside the car, and the time remaining on the timer. I can also activate the rear defroster from the remote. $375
You can use it to control other things, like turning on your heated seats, lock/unlock doors, etc. I didn't have those things installed.
Go with aftermarket and have it installed by a reputable installer. You get much more for your money.