I decided to try out
Knight Online and have been playing it the past couple days. So far it's alright. The graphics aren't quite as good as Kal or Xiah but they're perfectly acceptable. Runs at 10-25fps at 1600x1200@32 at highest quality which is smooth and playable for a game of this type (on my Barton 2.2/FX5900nu).
There's quite a few quests to keep you busy (more than Kal or Xiah at least). You can be either a human or an orc and choose from 4 different classes: rogue (archer or assassin), warrior, mage, and priest. Gameplay is pretty hack and slash oriented and items drop often.
One negative is that there are literally hundreds of people running around, probably over a thousand at least. At least that's the impression I get from the main town and it's surrounding areas. I haven't been to other towns or anything so it may be less crowded elsewhere. With so many people it's hard to not KS or be KS'd. It also is difficult to effectively navigate the player shops if you're looking for something in particular because they're all crowded together. This may only be an issue on my particular server though (Belarus1) and might be different on others. There's around 8 servers total.
1600x1200 Screenshots
Currently have a lvl22 rogue archer.
Edit: Also there's PvP of some fashion though I know nothing about it.