I heard Zenonia was great so I picked it for a review on my site http://www.pixel-freak.com
d but i've been dragging my feet on the review because the game boils down to a grind fest. I've started 2 and 3, and both of those are a bit better. Not sure if they will turn out to be a grind fest as well, but you may want to consider working your way backwards through them until you find one you dislike rather than playing them chronologically. I have seen some characters from Z1 in Z3 so I know they are at least partially related. Z1 is just really short on story, and heavy with grinding.
Symphony of Eternity is a decent game if you can get past the graphics being a little sub par. The battle and skill systems are decent. The story is mediocre. I'm yet to beat it as well.
If you'll consider non Fantasy RPG games take a look at Game Dev Story. Solid RPG elements, but a bit unconventional. Unfortunately I haven't reviewed any of these games officially so I can't forward that on. But go take a look on youtube at gameplay videos, you'll find plenty. Just be warned that Game Dev Story looks much less interestesting than it acutally is. You WILL get sucked in.
And thumbs up to the person that said Battleheart. Best Action-RPG out there and should be played by everyone. That game is balls. Big ones.