Anybody know good mmorpg like wow and gw?

i have played wow for a very long time and recently changed to guild wars but that got very boring ver fast...so its back to looking but i dont want to do the same thing again. i like the graphics of wow and gw so im looking for a similar game that will last a long time without geting boring. i dont minde paying monthlys but it would be great to find a game that has similar graphics and is free(i have searched but nothing came up). i need some help here please give me games that u have played or you know ow it is..if not just give me the name and i can look it up. ty.