I went to the Meguire's shop the other week, and had them show me the best way to use the Plastx on the headlights. i had been doing it by hand and while it looked better still not quite what i wanted.
MIke there used more of the Plastx than I used with an Orbital polisher. Came out great.
I then saw an Orbital Polisher on sale at Harbor Freight for $34, this and the Plastx is all thats needed imo.