@Ben85 - Some reading for you on this topic Ben
http://www.detailingworld.co.uk/forum/showthread.php?t=63859
http://www.detailingworld.co.uk/forum/showthread.php?t=66024
For the starter in machine polishing I would go with a DA
You could, if you wish, when you gain more experience, move on to a rotary
Incorrectly used you can burn through the paint with any polisher................
Seen the dodo juice DAS-6. Only going to be using it on my cars so think it should do the job.