To include R3 and japanese regions. Maybe even yhe R2 and R1 regions are seperated even if they are both english regions.
This:
Of course, if you find that you just never have good network experiences with people from other regions, then definitely set it to "English Version" but make sure you specify if you're trying to get a room going.
Sure, to play with other regions.
I completely forgot that Asia is getting the game this week too, and since US and EU can play together with "english version" enabled (I played with two gaffers that got the EU demo afaik) I assumed it'd be a waste to use the non-default option since R3's online would be dead by now.
But, as far as GAF go, are there people going for the R3 version? I never heard of a R3 vitacat not using an US account
edit: and can't really say how my connection fares playing with "all" enabled, since I never found a lobby that way lol