I have not researched Blu-rays enough before buying my first one. You can't even play one on Windows by default, and VLC and MPC both require following arcane instructions from user forums to make it work. That's the last time I bother. DVDs were the superior format.
@Gargron I'm using daum potplayer as my default, and as it seems, they support blueray (not 100% sure). I'm too lazy to connect my blueray player right now ^^