The best air bag system...

[au03z71]

I know I'll probably get mixed responses here, but who has the best experience with their bag system? I'm looking to put air ride on my truck when the time comes. Nothing radical, just a c-notch and bags out back, drop spindles and bags in the front, and on board air compressor, etc... How much drop would you expect from the c-notch and bags in the back? And also, is digital control the way to go? I found a company called Helix (sp) and they had a pretty well outfitted package. I have also heard that strong arms from air ride are great. Any response is well appreciated. Thanks!