Managed to connect my VUDU account using the app on my phone so iTunes, VUDU, and Amazon connected.
Just used to the DiscToDigital program for VUDU to convert 10 DVDs to HDX on VUDU ($5 per disc). All 10 showed up in VUDU immediately, then 8 of them showed up in Movies Anywhere. About 10-15 mins later those same 8 finally showed up in my iTunes Movies to watch. The Italian Job and Saving Private Ryan did not transfer over to MA or iTunes (guess they're not part of Movies Anywhere)
On my Apple TV 3 or Roku Premier:
VUDU - up to Dolby Digital Plus 5.1, no extra special features
iTunes - just Dolby Digital 5.1 (no Plus availability), but you get the iTunes versions so more extras (whatever special features are available for the iTunes version).
Movies Anywhere - 2.0 channel stereo sounds only, but with a few special features available.
Amazon Video - Dolby Digital 5.1, with some extras via separate titles.
VUDU no longer offers the 50% off if you convert 10 discs, but this was a nice way to get HD versions of several movies that I rarely watch because I don't use discs anymore. I got the full Lord of the Rings Special Edition, plus 7 other movies for $53 after tax. If I opted to buy the Special Editions straight up from iTunes it would have cost me around $45.
I'll watch movies via VUDU for the Dolby Digital+ for best sounds possible, or iTunes for the Extras.
Along with the five free movies they gave us, I feel I got a pretty good deal today.
[doublepost=1507849064][/doublepost]Now if Movies Anywhere would let me connect more than a single iTunes account my issues would be solved. I still have a handful of movies only available via an older iTunes account I used in the days before iCloud