I have a $20 5-inch random buffer
However, I find that the most difficult stage is removing the cleaner-wax.I apply a cleaner-wax by hand, and remove it the same way.I then follow with pure wax- put on and off by hand. SOMETIMES if I feel in the mood, I will use the 5" buffer to give a final shine. I use a wool bonnet on the buffer and then put a buffing towel between the bonnet and the hull so that the towel gets the wax build-up instead of the bonnet. I change the towels frequently.Sometimes I use the same technique to remove the cleaner-wax and the pure wax. It is a trade-off. Removal by hand requires more labor, but the buffer gets heavy to hold above your head and balance on a scaffold is a factor.If you decide to use a buffer, I would recommend a smaller 5" size because it is lighter to handle. Random action is the way to go.Work in the shade. If the cleaner-wax or the pure wax is allowed to 'dry' in the heat of the sun it it MUCH more difficult to remove and buff out.As an aside, when I wax my car I always use the 5" buffer. A car is much easier to do with the buffer because you are not working overhead while holding the buffer.