[Chompy]

I have to say files. Easier to manage and work with if you are offline (You can write up items and all that stuff when you're missing an internet connection. Just upload them when you get internet back.)
I usually just store all the information in files, and then cache them for faster access.

It's just so much easier doing object.loadvars(filepath), instead of having to hazzle with requests and such with SQL..

It's personal preference to a certain degree though.