I personally am not much of a MMORPG person, but as far as free ones go, even I will acknowledge Forsaken World is one of the best. Only played it for a short while myself, but know several friends who really enjoy it. Some have even said they prefer it to WOW. Also, the cash shop isn't brokenly overpowered, so relatively speaking, it provides a rather level playing field for both paying and free players.
So if MMORPGs are your kind of thing, its definitely worth checking out