CAM Software Options?

While I'm waiting to find the right machine for my cnc retrofit, I
thought I'd start playing around with the software. So far I have
download TurboCadCam which does both. I want to take a look at some
of the other CAM solutions available. Any recomendations where I can
download some eval copies? I am a beginner but kind of a an E-geek
anyways so ease of use, as well as functionality are important.

Mark
www.mark.hargett.com