With all the content out there and to manage it in the back end it becoming a harder and harder task, ok so i have even used postnuke with the gallery modual and a labor force to do manual managment, looked at content god and told not to go with them, site depth does not thumb movies and adultwebware site is not operational and that leaves mas and i think nats are coming out with a CMS.

I'm looking at a CMS that can auto update, show different content to a new user today and an old user tomorrow and can thumbnail movies too.
Needs to manage a whole server, what are you guys using and why?