The ping pong anime seems really good.
Nothing is necessarily top notch, but I like how they adapt a different art style. Also they have two Chinese characters, and their Chinese voice acting sounds pretty good. Usually when you see foreign languages appear in anime, the voice acting is either done by really crappy foreign VA's, or Japanese VA's with an absolutely horrible accent. Neither of the two seems to be the case (granted of course, that I do not speak Chinese).
Other than that the voice acting seems pretty good. The animation does seem a bit low quality in terms of frame rate and detail, but it does have a nice feel to it.
Can't really say much about the characters and the setting yet, but it seems pretty alright.