I would rather say 7.0. With 9.0 it was already established as superior. https://www.postgresql.org/docs/7.0/release.htm https://www.postgresql.org/docs/7.0/r

I would rather say 7.0. With 9.0 it was already established as superior. https://www.postgresql.org/docs/7.0/release.htm https://www.postgresql.org/docs/7.0/release.htm vs https://www.postgresql.org/docs/9.0/release-9-0.html https://www.postgresql.org/docs/9.0/release-9-0.html which added full windows support.