I have the 3 disc "deluxe" edition.
Overall it's louder and the bass is more up-front. The live tracks from disc two are from the same live show as seen on their first home video. The unreleased track on the the 3rd disc is cool to have... it's a perfect precursor from "Power Metal" to the CFH album.
If you're a big fan of the CFH album like me, it's well worth having!