2002 buick regal gs remote start kits

I have installed successfully a remote starter in my 1999 Camry and now I have a 2002 Buick Regal Gran Sport that needs a remote.  My last install was a DEI 561T valet into the Camry and it works just fine.  It did require a transponder module (keysense) for the Camry. 

I need suggestions on what to purchase for the Buick.  I have seen gizmos of many types to bypass security.  some need keys, some don't.  Sometimes there is a T-harness that is supposed to take care of everything.  There are modules that plug into the datalink.  I don't know which to buy or how to get the most bang for the buck.  I would just like a remote start that would have maybe some sort of feedback feature, though even that is not absolutely required.  I am not sure if the12volt gives brand opinions but if you have some good ideas we can go through regular email or instant messaging.