It is a quite difficult question. According to wxWidgets,
"even" versions are considered as stable. I wonder if we
can apply this rule to wxPython.
All these versions are different; 2.6.3.3. is a good one,
but 2.7.2 fixed some issues introduced in 2.6.3.*, at least
for me.
If I had to leave 2.6.0, I would just skip to the latest, 2.7.2.
It is, at least, the most closed version for the coming 2.8 and
this can save work.
Jean-Michel Fauth, Switzerland