From what I have seen over some forums, fans of the game may be dissapointed by Dante of the series. He isn't necesarrily the kickass rock star represented in the games, but actually has some depth and cool dark silent hunter type appearance. The music isn't as hard rock or metal as in the games either, but since this anime series isn't the hack and slash type rampage such as the game, the music does fit to a certain degree.
It seems pretty much like the cookie cutter private detective or freelance merc anime to me. Always in debt, having to take on crap jobs just to become more in debt, saving a few innocents, and having an occassional comedy scene or episode appear out of nowhere.
You should be able to rent the games from the nearest movie rental or buy the titles for cheap at the nearest EB Games. It isn't hard to find really and sine they are a few years old, I am sure their are pretty descent deals.
Besides that, the visual is pretty smooth and the change in character for Dante is a plus in my opinion.