Best overhaul for base building

[bobrpggamer]

I have seen a couple of overhaul mods that I like, but I was wondering if they would fit my playstyle. I am mainly a Base Builder / Tower Defense person, that's why I like the game so much.

So of the 2 mods I like, which one would be best for the above playstyle.

1) Darkness Falls

2) Undead legacy