What others have you tried?
Here are some that I have played or my parents have played or enjoyed:
LOTR online
-My dad use to play this for awhile, maybe 5 months? Hmm..although he is back into Wow now. He enjoys it, although he has to play it on the lowest setting... It's also apparently cheaper than Wow..but less active players overall...
Dungeon and Dragons online
-It's okay..but my parents gave up with it after the first month as it was very quiet, expensive at the time and not much to offer, but apparently it has lovely graphics (on high end computers)
Guilwars 1 (no monthly fees, but ALOT of standalone/optional Expansions)
-Not eactly "wowish"..but at least somewhat entertaining. I got bored with it as I didnt like the "instanced adverture"..it was a very "closed" mmo :/..Infact.. I'm not sure you can call it that...maybe just MO :/...It's okay if you dont want to pay a monthly fee, but if you thirst for something to keep you entertained for months AND have constant social impact..then don't go for this...EVER.
Aeon-
(my ex use to play this alot, I think he still plays it...If I care) It's like a mix between Wow and GW honestly, I'd kinda class it as a more EVERYTHING IS SHINEY, OPEN AND PURPLE ALIEN WORLD version of GW 1 with a hint of Warhammer online :/. I think its good, at the time there was alot of players.....but I do not know how long it can keep one "entertained" after the sense of "oooo! pretty colours and graphics" effect fade off.
Warhammer online
-okay..but boring after like level 10 as there isn't many players or social interaction with others and it NEED's more player so you can level up your renown easier...I like it..but it's too slow and too little active players...That's what killed it for me :/