Buffer/Polisher Recommendations
Go with the larger Harbor Fright buffer. I have one and it works great.
The advantage of using a larger buffer is you can use a larger diameter wheel. It will cut faster because the wheel speed is higher at the same RPM because of the diameter. I even use 10" wheels on my 8" buffer. It does increase the chance of shooting a piece across the shop, but the results are better.
Eastwood has some good assortments of wheels and compounds to get you started. You can order also wheels from these guys.
https://www.caswellplating.com/buffs/wheels.html Download their polishing booklet.