Played CB and OB of European cabal..

It was fun in the start.

It sucks end-game, seriously. Gets extremely repetive with the quests, the dungeons will bore you to death and the skill-level grind is not fun.

And yeah the combo system is pretty neat in the beginning but after hours of grindfesting, it's not even cool anymore, I made 35~ combos with my eyes closed because it became a part of the grinding. Making combos was essential if you wanted to level/skill-level effeciently. (faster skill-cast, they never miss etc)
The end-game pvp/competition is also a complete joke

It's a good game though if you like some eye-candy and like to chill out fighting mobs etc, but not if you're looking for a bit longer term gameplay/Pvp