If you like LoZ a lot, get the 3DS, otherwise I'm not a big fan of Nintendo's current range of consoles, portable and stationary.
The laptop would overall give the most performance per buck, even if a tablet could be a tad more portable, but as Kamoku said, their quite overpriced for what you get. Myself I wouldn't go for either of those, mostly as I don't have any need for any of em though.