A game that has been overpowered by greed and goes downhill with each passing update.
My mini-review I wrote in 2008 around when "second-reborning" came out is on MMOsite.com. Since I can't post url's here you can search "MeteoricAngel72 Conquer Online".
Years ago, I would have recommended this game to anyone, it was truly fun and I made a ton of friends, a few who are still people I speak to nearly every day even though we had quit that game a long time ago.
Now my opinion on this game is that it is the prime example of how a cash shop addition can break a good game. How this game will play out for your highly depends on your equipment. There is no way you can compete with the majority of the players in-game unless you purchase "Conquer Points(CPs)" formerly issued as "Dragon Balls (DBs)". Cash shops have certain items you can purchase to make your gear stronger, and people who have really good quality gear you can bet they have spent at least thousands of real cash on it.
The PVP is unbalanced due to the factors listed above, and even if we took gear out of the equation, the classes are still terribly unbalanced.
If you wanted to check this game out, go ahead, though you'd be wasting your time. Lower levels it's pretty easy to level up with quests and free gear you get along the way. There are a couple servers that actually got rid of all of the new features that unbalance the gameplay, so I recommend playing one of those, though it may be a bit harder to level up.