If you go down the route dude look up DAS 6 or DAS 8 machines (cant remember which).They seem to ve very popular for newbies . I wouldnt bother with the halfords job ones.Its best to go with one that has alot of reviews like the DAS ones because i wouldnt want to get something like a machine polisher wrong.
I was considering myself but like jack we got put off at wax stock from the demonstrator bloke.HOWEVER many people swear by it and have no issues.Speak to Anewton he has a machine polisher so he might be the one to ask at the next meet.