Which series in the Heroes Chronicles did you like the most?

I haven't even heard of 7 and 8.
I think 5 and 6 are incredibly boring; I barely made it to the end. The plot is boring in them, but I always liked Jelu.
3 and 4 are better, but the plot still leaves something to be desired, even in the fifth game, the story is more interesting.
And I haven't played 1 and 2, and I won't. Why?