I have no personal exerience with it, but checked it out @ SEMA last year. It seems exteremly expandable and electronic control options are almost without limit. Having said that, you could also piece together a multi-vendor system that will do most of what GW mentioned above.
John Parsons did one I believe. It was a long install, but he was generally favorable about the product. Gandalf/Gregg is doing one now - he's an IT guy and this system is right up his alley. All is right in his world...
Personally, unless something changes my mind I'm going AAW for ease of install and the fact that I don't need that many options. I'm building a hotrod, not a Dub showcar.
There's a rumor of an impending GP over on PT...