Digital Distribution

I've still got a month to go before I get my Wii U, but I'm wondering those who have one already or are planning on getting one, is anyone leaning more towards getting their games digitally for the Wii U rather than buying the physical copies?

Does anyone know how much space the games take up as downloads? I think I read that Nintendo Land is just over 3 GB. I know that the discs can go up to 25 GB, but I feel like the size is going to vary quite a bit between games.

Personally I'm learning more towards buying my games digitally, the same as I am on my 3DS. The prices are on parity with the retail games, which is what had always put me off buying full games digitally on my Xbox 360. It seems like a more convenient way to get my games and always have them all available on the console, plus I like to support digital distribution pushes like this. Still, there's always going to be that 'collector' part of me that will want a box to put on a shelf...