[xubuntu-users] Howto Ubuntu -> Xubuntu

[Kevin O'Gorman]

I've been trying xfce, and find it does everything I need on the
desktop, with at most small differences in appearance and use.
I plan to go to Xubuntu when I go to 12.04 (maybe soon, more likely
wait for 12.04.1).

I'm wondering what the best way is.  I'd like to *not* install fresh
-- I have tweaks and configs all over the place that have accumulated
over 8 years or so.  I doubt I could find them all.  I *would* like
/etc/lsb-release to reflect what happened without manual intervention.
 The main candidates seem to be
1) Install in a spare partition (I can, but don't want to)
2) Use the "going back" instructions from
http://www.psychocats.net/ubuntu/purexfcenatty and upgrade it.
3) Use an Xubuntu disk to upgrade Natty directly.

Are there other (better) options?
Which would be smoothest/best?

-- 
Kevin O'Gorman, PhD