I have the system from Ididit aka " digital guard dog system". I believe they are kind of separated now. My first box messed up and they replaced it for free and installed it and it was working fine then I took my car to get tuned and they said it messed up again so I need to call the guy from digital guard dawg and see what's up now. He was pretty helpful the first time.

I went with this...
Very happy with it !!!

http://www.gallotech.com/keyless-starter1.php

Advanced Keys is awesome. Controls the windows, doors, and has a RFID so you cant start the car without having the key card on you somewhere. Think C6 corvette. Same system basically

Wanted to follow up on this a bit. I finally have the car somewhat on the road and more experience with the Advanced Keys setup.

I really like it. It unlocks the doors for you as you walk up, after you get the car running door closed, etc., it locks the doors for you, unlocks them again so you can get out (I believe after you shut car off, would need to check again). Overall, system is really nice. Only 'issue' I have is when you are near the car and walking around, it locks/unlocks the car as you get in/out of range. But to be honest I only have 1 antenna mounted so far. If I'm gonna be near the car I just put the RF card inside and its fine.

The only thing I would caution anyone who wants push button start to keep in mind is what does it take to kill the engine. I personally will never go push button. I can kill the engine faster turning the key off than holding a button down. Just a thought. Carry on.

I have the ididit push button start and it is great. Reliable and easy to install. That is the answer to the push button. If you want the remote door and security and ..... then that is a different question. I took the question as the best push button start and I am very happy with mine.

Trey's comment is critical... YOU NEED A KILL SWITCH. that is a 50cent add and 2 minutes but the most important.