Should I buy Zenonia 1 or Zenonia 2?

That's hard xD

Zenonia 1 has a wayyy better storyline,

Because Z2's just repeats halfway through.

Also, 1 is cheaper.

But 2's has better graphics and improves the overall neatness of the game.

1 doesn't link to 2, so it doesn't really matter what order you buy in.

But honestly.... I think you should just try the lite versions, and see which one you like best :)