I only worked with ITO and FTO yet. They are both very stable against the basis i tried yet, but acids etch them very quickly. Specially HCl will remove ITO in no time. But all acids seem to etch ITO and FTO. Bases are actually nice to clean the substrates, i use a mild KOH to clean them, and never noticed any problems.
Chemical durability must take into account also environmental stability (especially in humid environment). ZnO or Al:ZnO tends to be rather sensitive to moisture (in the sense that coating resisitivity increases over time). Both FTO and ITO are much more environmentally stable.
Many thanks for the versatile and helpful answers!
The problem of FTO (waht i have seen to date) is the "poor transmission" including the milky look for film resistivity of about 10-15 Ohm/sq. AZO and ITO are more "transparent/less milky" in the same resistivity range.