Hahah for one thing, don't bother playing runescape...that game is for 8 year olds. Well there are ALOT of good games. If your willing to pay to play the game I strongly suggest. Age of Conan, the game is brutal, there are alot of classes to choose from (etc. assassin, barbarian, ranger) the graphics are just amazing. although that might be a down side, because you have to have a pretty good graphics card to even run the game. Its $15 a month to play, but you can just go to target or bestbuy and buy a 2 month game card when ever you feel like playing, which is what I do lol. i had lots of fun playing on the pvp servers, cause its pvp everywhere, so have fun killing the noobs (; and its not like (Horde vs Alliance) like WoW, its guilds vs guilds (aka clan, group)
Age of Conan ($15 a month)
http://www.ageofconan.com
There are many more games to play, if you looking for something thats a little more laid back and easier to play, I suggest trying Runes of Magic...Now hey, lol i know it sounds pretty nerdy but its pretty fun and easy game to play. Also! Its free, so you get what you get and you dont through a fit. Except now that I think of it....Its a knock off of WoW and you said you didnt want a game like that lol.
Runes of Magic (Free)
http://www.runesofmagic.com
The company that made Age of Conan is Funcom. They make really good games. For instance if your looking for a game thats a little more challenging then i suggest Anarchy Online. Its a pretty old game, but its got a great story line, and all the players are really respect full and have alot of experience with the game. Your probably gunna be pretty confused by it lol but i thought it was a great game. Its free to play, but there are alot of expansion packs that you can get, for all of them its like $15 a month, but the only one you really need is Shadowlands and thats only $8 a month.
Anarchy Online (Free, until you get expansions)
http://www.anarchy-online.com
Funcom is also coming out with a game called The Secret World. Its going to be great and there will be no mmorpg like it. Players will start as members of the ancient Dragon, Illuminati or Templar societies in the starting cities of Seoul, New York and London respectively. The Dragons are shadowy political manipulators; the Illuminati is a decadent, greedy organisation stuffed with celebrities and power-brokers; the Templars are military and religious zealots...and the world is pretty much dead, there are zombies and damn if you dont think taking a shotgun to a zombies face sounds fun then i dont know if i can help you. the only down side is....THE GAME ISNT OUT YET! But i will be getting it as soon as it comes out. you can check out screenshots and register for the beta on the site. you can also check youtube for some teasers or even E3 coverage if they have it.
The Secret World (Prob going to be $15 a month considering how badass it will be)
http://www.darkdaysarecoming.com/
Heres the thing, THERE ARE SO MANY MMORPGS, you pretty much just have to try them and see if you like them. If you checked out the games i told you about, and you arent satisfied then i suggest you check out MMOHUB it has a list of every mmorpg, free or paid, you can possibly imagine.
MMOHUB
http://www.mmohub.org