Do NOT play Archlord. It sucks and the GMs are non existant.

I've been playing Anarchy Online since June. Its a 6 year old game, but in my opinion its decent, a HUGE step up from RO(Then again, most MMOs are). The base game with the add on that enables Tower Wars, which is something along the lines of your guild controlling an area, then building turrents and towers there, then the area alternates between being PvP enabled against people from other factions and all out PvP against everyone but your guild over the course of the day. I have yet to participate in it myself though, so my info could be a bit off. In addition, some of the harder areas are PK Enabled, so not only are you fighting the boss and stuff, but you gotta keep on your toes 'cause the other factions could show up and pick you off and then take out the boss.

As for grinding, it boils down to either doing missions, which are basically like quests that you get from a terminal and feature enemies that get harder, but yield more EXP the higher level you are and the higher you set the mission difficulty bar, or old fashion grinding of overworld or instance enemies. You can also get EXP from tradeskilling. It takes a bit of work to get good at tradeskilling, but like in any other MMO, being able to make that set of armor not sold by an NPC is worth the trouble and what you had to do to get the components.

However, the game is supposedly going totally pay again in January. Long time players theorize that they are most likely going to extend the free play period again, as they allegedly make a nice sum off the video and picture ads you see around. While out of place, the picture ads are tolerable, but the video ads tend to weirdly glitch that you can hear them, even if you are nowhere near one until you change maps.