What is the best free PCB designing application..??

...I'm using "Target3001" (there is a free version here: http://www.ibfriedrich.com/, but the commercial versions are also not very expensive). It is intuitive and easy to learn. I as a complete newbie managed to do this:Stylised swingboat amusement ride(ger: Stilisiertes Schiffschaukel-Fahrgeschäft) - YouTube as my first PCB!