I didn't get to play the Wii U version at all since my brother bought it but sold it because he didn't play it anymore, he did say he enjoyed the game for what he did though.
MH4U is my first game of the series and I'm impressed of what it has to offer, it's been rated quite high from multiple sources but I feel the game is friendly enough and the controls aren't too bad, just I feel it's a tad complicated for Bow users.
I'd say it's worth it, but you should probably check some reviews to be on the safe side.