The new Super Sniper should be a good system too and less expensive than a multiport setup. The Holley Terminator is a good system that is fairly easy to install. But you'll need a laptop, an ECU cable and the software to really dial in a performance engine.

The local guy I've been helping out has an LS crate engine with a fairly mild cam and his Terminator system has required a few trips to a tuner. If he had a radical cam in there then he would be paying a lot to get it tuned.