Better Window Manager is for power users who want to save windows in specific locations and sizes. Associated keyboard shortcuts with those window states and apply them to a window at any time.
Pro FinderMinder support
FinderMinder allows you to specify where (position) and what size you want newly opened Finder windows to appear. The default Finder behavior is to remember the last position and size for every window, but this can be frustrating if you already know where you want every window to appear (for example, centered at 800x600). FinderMinder must be running for window reposition and resize to take place.
FinderMinder must continue running in the background for window reposition and resize to take place, so click the "Hide" button to dismiss the preferences and keep FinderMinder running. Simply re-launch FinderMinder to access the preferences again or to quit the app.
Pro Has almost all the features needed in a window manager app
I've tried almost every app on this list. I thought it was amazing how many there were out there by the time I finally stopped experimenting and searching for the one I liked most. I chose Optimal Layout mostly because it was sufficiently extendable and felt lighter to use than the others. There were lighter ones, but those were very limited in their features and customizability.
Pro It's free! Which is fair as it manages only windows for Finder.
The price is right! It comes from a great source of developers who already have window manager apps on this page's list. I am not sure what they plan to do with this app in the future, whether to keep it light and by itself and work in conjunction with their other window managers, or add this feature solely to one of their other fully featured window manager apps.