Google Maps Plugin

Hi I am looking for some input on the google map plugins that are out there. I want to be able to use a google map within my site where two addresses can be entered and the directions along with the path are shown. Is this possible with the Google Maps API in general? And if so, does anyone have any implementation experience with any of the rails plugins out there to give advice on the best one? Is there one that will be easier to add directions capability to? Thanks, Dave