I wouldnt buy any media player without a fully functional remote. A tiny remote is cool and cute, BUT better think carefully how you want to control the playback. What are your viewing habits sa DVDs?
I would choose the media player that plays the best. That would be the A200 among your choices - but it's really ugly on the outside. Very very fugly.
You should check the Mede8er too. Very fast, very stable with reasonably matured FW. Cant do all the tricks of the A200, but its 2K cheaper. Is that 2K premium worth it? I'd personally say yes but the added playback capabilities of the A200 may not at all be relevant to you.
File Management: The PC is unmatched. Pasasakitin mo lang ulo mo if you use the media player.
File Access: Network access is cool and convenient...but expensive to set-up and run (save energy).
HD Audio pass-through: Dont buy NOW if you really want this feature. Perhaps later this year. Maybe next year. Who knows for sure.
Future proof: Myth
UI: Same same lahat halos. Puro promise palang ang mga super rich GUI...potential and promises - Yes. When? - Who knows...and you actually have to spend a lot of time if you want to do any kind of movie jukebox with your media player, and make the GUI more eye-candy. Do you have time for that? Would you rather organize or would you rather watch? Anyway, you can possibly tweak the UI of practically any player right now - but its not exactly easy.
Feature Rich: What other functions do you need?
So think it over well whichever player suits your needs the best. Pag nagkamali ka, early upgrade mangyayari sa yo - unless ok lang sa yo mangolekta ng katakot takot na player.