Gallery Input

I am looking for input on the best Gallery to use with WordPress.
I know there are several script/plugins as well seperate scripts like Gallery and Coppermine. I have a couple features/items that are a Must and I figure others can help in my decision.

MUST HAVE:
The ability of Anyone to Post Images and/or create Albums even if they do not have access to make normal Post to the Site/Blog

Gallery Albums on a Gallery Page and not as individual Post

Any input, suggestions or links to demos are welcome.
Thanks to all in advance