Picked up my third Wii U game tonight (at least physical release Wii u game). Got Super Mario 3D World.
Be sure to share your thoughts on that after you've played it.
I'm debating whether to get the Wii U with Super Mario Bros and Super Luigi or the one with Super Mario 3D World.
I own all 3 games and I personally enjoyed Super Luigi U a lot. Mario 3D World is really good too, but especially fun when playing with others. My suggestion would be that since Super Luigi U is only $30, get the bundle with Mario 3D World and buy Luigi U separately
But that's my opinion. New Super Mario U is great, but it's very similar to every other New Super Mario, so if you have them already, there's no hurry to get the U version in my opinion.