Remote Starter for 2008 Infiniti G35x Pushbutton

I am planning to install a remote starter for my 2008 Infiniti G35x (pushbutton). I'd like to use a T-harness to simplify installation. I've noticed a few different options, and I am a little overwhelmed. It looks like the starters from Fortin, Omegalink, and Compustar/Idatalink are similar. It does appear that the Fortin version is a bit cheaper, but I'm not overly concerned with price. My understanding is that I would still need to purchase an RF kit and possibly a flash module. Can anyone give me some suggestions? Is one better than the other? Is there any difference with installation? Are there any other options that I should consider? I just need basic remote start functionality. I appreciate any input! Here's a link to the items I referenced in my post: Fortin EVO-NIST1 Omegalink OL-RS-NI5 Compustar FT-NI5-DC

I would recommend purchasing the Fortin product from Crutchfield as they come pre-flashed to work as 3 times lock as well as being ready for the CrimeStopper RF kits. you will just need to install the harness then program the main unit to the vehicle.