The original has now been re-issued by the launch of Prüglers "Super Smash Bros. Wii U" in the context and different - except for the altered logo and somewhat longer cables - not from the original handle for the elderly Gamecube from 2001! The newly produced controller therefore can be quite normal for Gamecube and use the Wii (older version with Gamecube backward compatibility).
For Wii U can be the controller so far (as of April 2015) used exclusively for the new Smash Bros., and only in combination with the separately available adapter - shame (!). Anyone who wants to gamble cheaper and future-proof, therefore should look more like the entirely new Wii U Pro Controller. This is supported by almost all the games for Wii U (including Virtual Console). If one possesses but older Nintendo consoles to need replacement or pushers for years the Smash Bros. series gambled with the Gamecube controller - such as Melee or Brawl - of course here should strike to unlimited control over his fighter to get.