Three may be my favorite, though saddly never got an official release, as many of us know.

Out of all the US launches, Mana was the best. (Also Secret of Evermore, while not technically Mana, is close enough for me. )

Sword of Mana was pretty solid, though it kind of went downhill afterwords.

So really I only find two of the games to be great, though a new game as awesome as those two would be super.