What free verison of Lunix is a good alternative to windows?

I have a three year old laptop that I would like to put luinx on I just want to know what's a good version and is easy to use. I have an hp ze4400 series laptop|||OpenSUSE 11. It is the latest and best so far. It has the amazing desktop effects compizfusion as a standard!|||http://linuxmint.com/