does any one know whats the cheapest one out there
Do they work together?
They should or you get your money back!
Seriously, I've never tried them, but it should work. If you need more functionality, you might have to spend some money.
www.sheetcam.com works well for 2D and 2-1/2D CAM. I own it.
The cheapest one is the one that doesn't steal your life and hand it back to you in scrapped parts, broken tools and damaged machinery.
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)