Windows to Linux

I'm thinking about switching to Linux. Specifically Ubuntu or Fedora. Anyone want to tell me why or why I shouldn't? Currently using Vista Home and I like it but I just want to see what else is out there. Plus if its more secure, thats always a plus.

If you're going to run Windows and Linux at the same time, you might as well use coLinux. It takes a few minutes of setting it up so it works, but it's a lot faster and requires less resources. And like a VM it can run from a file on your normal Windows filesystem so you don't need an extra partition. Did I already mention that you can give it access to Windows files and folders too?