The last CMS I used was phpnuke and it was paid. I had the latest version that time, I think it was 7.0 or 8.0.. can't remember, but I hated it!
PHP-NUke is soo buggy and just isn't what it used to be like. PostNuke isn't too bad either, though I didn't like the lack of skins for it. I don't really use a CMS and don't expect too. I'm thinking of going back to good ol PHP and using MYSQL for my data.