Still unsure.

I'm getting the Limited Edition and leave it unopened, but I don't know which one I'm going to play.

Digital comes with a free SNES Mario Kart (at least in Europe) and you don't have to change the disk that much (and you don't have the spinning noise).

Physical is cheaper and you can sell it, but I won't sell it anyway.

I considered getting it digital just so I don't wear out my disc drive playing hundreds of hours of it, but in the end I prefer to have a physical boxed copy, it gives me more of a feeling of ownership.

I hope so for your sake and fellow gamers who opt for a digital experience. Lets hope they also do cloud saving too (they don't do that yet do they?).

Physical but kudos for nintendo's black magic of data compression.

Tell me about it, Mario Kart Wii was 2.6GB, MK8 isn't even double that despite the massive graphics difference.

The convenience of digital is undeniable, but I still prefer the physical copies for all of my console games.

mine is basic (so, low space, neither 10% discounts)and also i dont have a HD(in brazil it is expensive)
i hate to change discs, but i love the pretty boxes in my shelf.

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im not against a new kind of media: just a box(without the game)but with a chip. it the chip is closer to your console(20 feet?), you can download and play the underlying game. If the game box is too far, u cant play it.

So, the game is not corresponding to a account neither to a console, and dont need to be online. You can rent to your friends, sell, trade for other games, and dont need to change discs, you can change to all game you want, even without moving your game from your shelf.

I wish other publishers would do that, I really hate downloading 50GB games to my PS4/XBO. 

OT: I'm not sure, is it retail or digital in the bundle? Because that's what I'm probably getting. 

How big are the hard drives on PS4/Xbone?

Physical copy, supposedly:

http://playeressence.com/mario-kart-8-special-wii-u-bundle-pre-orders-open-at-gamestop-and-best-buy/