yup . sheetcam is by far the best ive used!
supports everything plasma related and if you want to add anything else the post processor is quite easy to work with.
ive been using it for my machining centre work too (wood)
its a free to try ! £110 i believe to buy program so wouldnt take long to pay for itself either!
the backup off les is superb too if you have any questions you cant find an answer to