Black Desert looks so good I could lick my freaking screen. I didn't interest much in Blade and Soul. Aion was enough a pain in my [censored].
But I already pledged for Shroud of The Avatar, so I won't play BD before it's actually out.
Edit: That one you linked looks pretty nice too, Tears
Black Desert CBT2 starts Feb 18th, I'd suggest giving it a try. I'm currently playing on KR and learn something new everyday... if you don't try the game at all before launch, you're going to be severely confused with how to do things. BDO doesn't carry people with annoying tooltips, 99% of the game you need to figure out on your own. This includes workers, nodes, enchanting, combos (and hidden combos), horses/breeding... they don't explain this stuff in-game.
And it's probably a good idea to get a class picked out and appearance file saved, cause at least for me, it takes me 1hr+ to make a new character lol.
But each to their own. Since its B2P I think it'd be a smart choice to test it before buying though.