Recommendations for Low-RAM Window Manager + Dock

I am looking for a Window Manager which can be run by itself without a Desktop Environment and which has the bare minimum to run a dock of some kind. Which window managers should I shortlist and which dock or docks? Being stingy with RAM is an important characteristic for both in this case.

I realize that n people responding will give n+1 suggestions, but I am hoping to hear advantages I have missed. It has been a while since I investigated the different Window Managers available.

I'm familiar with Cairo Dock, it is good. I also know to avoid Docky. But there are others.