well I seem to have stumbled across this a bit late!
I could have answered most questions but didn't realise this thread was here.
I've been using plotters for the last 8yrs or so and they did speed up my shell spraying big time.....but now i've left the company.
Dxf are usually ok. Corel can sometimes be a pain in the arse at getting plotters up and working. Illustrator is much better or a propper cutting program like Sign Lab or something...much easier to use.
Signmaster, we used them for most of our stuff, top blokes but can be a little expensive if thay have to pay visits.
