Chess Assistant: Mega

Is Chess Assistant any good?

I was seriously thinking of getting Chessbase Mega, but the Chess Assistant: Mega thats in the holiday catalog seems like an really good deal. (4 million games, Deep Rybka 3, and 12 DVD endgame database).

Has anybody used Chess Assistant, and how does it compare to Chessbase? At the moment, I’ve got Chessbase light on my computer (free version).