it depends on what you're looking for and what your budget is.

awiz is pretty good and their service is terrific and they're more that willing to modify it to suit your specs.... and they meet their deadlines!

there are some other out there like the one manifestmen uses.

and lee would/will pipe in that you just get a whizbang programmer to whip a content manager up for u. that's the way to go if you have the $$$.

there are other options out there.