iTunes or a Windows Media Player version are always the only two options for Disney Digital Copy discs. i always go with iTunes since you can always re-download at anytime and actually transfer to multiple computers at your leisure.
Who the heck wants to watch a movie on a small cell phone? Actually a lot of people I guess. I watch movies at night when I'm home. So I would choose Apple. I do like ultraviolet though. It is set up really well. A lot of movies I buy now have ultra violet digital instead of Apple. I guess it all depends on the place you want to watch the movie.
The VUDU (There for UV) is available on Roku so you can stream it. Just like Apple TV. Unfortunately it does not look like Disney included the UV version code...I don't know why if they included the iTunes one though...because you can buy an UV version of the movie on the Vudu web site. Maybe they wanted to make the majority of the growing number of people who stream (those using Roku) buy the movie twice.
what's the difference? because i just won an ipad, and the only computer we have that works doesn't play dvd's. i downloaded moonrise kingdom easily with the code. but then i went to check out some of my disney dvd's with digital copy and i had to play the dvd on the computer and transfer it. ugh too much work.