XFree86 4.0

[Peter Jay Salzman <p@belial.ucdavis.edu>]

I'd like to upgrade to XFree86 4.0.   The way I see it, there's 2 options:

1- package
2- tarball

I'm running Potato, and don't really want to upgrade to Woody.  Based on
that alone, I think tarball is my only option, but I want to make sure of
that.

Which is the better way for me to upgrade X?

Thanks!
Peter