I've just downloaded Cut3D and it's by far the easiest I've used so far, however it's more aimed at routers and lacks features like spiral milling into holes.

I'm just running through the Dolphin tutorials to get a hang of how it works.
Ideally I'd like something that can also cover lathes, as it'll save learning two totally different software packages, so Dolphin is current front runner, but I may also have to have a play with BobCad/cam.

For now I'm just hoping to find something that will create the g-code for the tool holders so I can get the lathe up and running, and I can play with different CAm packages later.