I won't waste time explaining the tech of a Pac-Man game for one very obvious reason: it's a frigging Pac-Man game. With games like this, it's all about the artistic approach and style. Pac-Man Championship Edition DX doesn't risk alienating fans; the development team's intentions are clear the moment you get a glimpse of the pre-game customization options. If you want pixelization, you got it. If you want something a bit more modern, the choice is yours. If you want something in-between, you'll find something you like. Just about every visual incarnation of the hungry pie chart is here in all its glory (well, with the exception of the bipedal sprite from Pac-Man 2: The New Adventures). If you have an idea of what the ideal Pac-Man game should look like, you'll be able to recreate it here.
Namco is very proud of its heritage, as it should be. Pac-Man Championship Edition DX retains every conventional Pac-Man sound bite. From the introductory music to the wakka-wakkas to the signature death sound, this game isn't at all eager to get away from its roots. Techno fits the kind of gameplay experience offered by Pac-Man Championship Edition DX, and there's a fine selection listed among the rest of the pre-game customization options.