Polishing Aluminum Valve Covers

I'm putting my little 340 back together and figure now is the best time to shine the valve covers up and put a fresh coat of paint on them. What do you guys recommend for shining up aluminum? I'm not looking for perfection and do not want to spend 100 hours on these things. I just want to make them look presentable. Do you guys think one of those wheel buffing kits (like Chip Foose sells) that chucks up into a drill would work?