Thanks for all the replies.

I'm probably going to go with OpenInteract. Everything and Bricolage look a bit hairy on the editing side, and Slash seems to require a rather non-standard mod_perl config. I prefer Template Toolkit and PostgreSQL to some of the other options. OpenInteract's documentation looks clear and lucid. SPOPS looks useful on its own. OI seems geared to multiple sites going off the same installation, whereas the others seem to assume that there will be only one (virtual?) domain on the server. And finally, if I run into trouble, I can always /msg lachoy right here. I'll update this node (or perhaps post a new one) when I get the new site up and running, so you can all go break test it.