I'll keep this short as it's marginally off-topic.
MyMovies supports the M (including menus) with exactly the same limitations as the Oppo App, which is mainly that it doesn't support files (ISO, MKV).
But DVD, 2D BD, 4K UHD folders are perfectly supported, as well as 3D BD folders.
The main downside, of course, is that when you rip/convert to BD Folders, you double the size. I bit the bullet as I already had all my DVD, BD and UHD BD in folders, and converted my 400 3D BD ISOs into folders too.
There are occasional glitches that hopefully will be ironed out re network control, sometimes a title doesn't play, you have to try again. Not a big deal, but not ideal.
But being able to control the M from MyMovies super app is just irresistible. You browse your collection on your iPad/iPhone (I haven't tested Android) and once you've chosen your title, you play it on the M.
The main downside, apart from the folder limitation and the slight network impredictability (only to start playback, never when playing, playback is perfection for audio and video for all formats), is that the M is only supported as a bridge, so you need a laptop or a PC (can be client or server) on so that MyMovies can go through it to control the M.
To discuss MyMovies and the M further, please check this thread
Due to the slight IP control impredictability, I'd love to try a Dune Pro 4K when/if they solve the 23p issue at 4K 12bits 4:4:4, as it's also a dealbreaker for me. I have it in my wish list on Amazon, I'm only waiting for Mark's post to checkout
for keeping us posted, it's very kind of you.