If Rhythm Heaven could be said to stumble anywhere, it is that the English-language songs in this version seem a little less authentic, a little cheesier than the ones in the Japanese game. And although the tap-and-flick touchscreen controls work well, Rhythm Heaven is actually the sequel to a Japan-only game that used standard buttons, which worked better.
These are mere quibbles. Rhythm Heaven is exactly the sort of novel, deep, challenging game that people accuse Nintendo of not creating anymore. Play it.