G code software suggestions for use with Master5?

I have a cnc plasma setup in the works & I think I'm going to use the
Master5 program suggested to me by several of this group.(I hope I can
eventually figure it out)-I download the demo to get a feel for
it-definitely more than I think I need(I guess)for plasma cutting,but
keeping future prodject ideas open (like building router?!).With the
demo I also found out that this is controller software I believe,so
now I asking if anyone could suggest an economical/versital G code
software? I've looked at a few but I'm just not really sure of one
that would work well with Master5. I would like to be able to import
files from both my cad (turbocad v7)& my corel draw (v7) for scanned
images.--Anybody have any ideas?
Thanks-Norm