Which is the "best" way to create/edit a mod in Civ IV?

[CivRules07]

the title says it all. here's the details on what i mean by each of the options:

WorldBuilder: includes using the in-game WorldBuilder and editing the WBS file
XML: copying XML and building a mod by editing the XML
Python: creating scripts, etc. using Python
DLL: editing the DLL files
idk and idc: u aren't sure, you don't care, or u just aren't a modder

i'd love it if u posted when u vote so i can get an idea of why u voted the way u did

[LDiCesare]

You lack an option "It depends".
There's not best way, it jsut depends on what kind of mod you want to do. I'd say WorldBuilder is not for modding but just simple scenario creation, but apart from that, all answers are valid but it just depends.
So I vote it depends, which is not an option.

[CivRules07]

updated poll/thread found here