For cleanup and maintenance
I bought some Nuvite Nu-Image from Perfectpolish.com. It works really well, but Tom and Perfectpolish has stopped carrying it due to lack of availability. Might be able to find it elsewhere.
Be aware that it has silicone in it, so future painting will be more difficult.
In any case, Nuvite is the way to go for polish, and Tom at perfectpolish.com is good to deal with. Read the info on his web site.
My process for new aluminum is:
7-10 passes with G6 using wool compounding pad (Tom recommends F7)
5 passes with S using wool compounding pad (Tom doesn't do this)
3-5 passes with S using the Cyclo polisher with Tom's rubber pads and WalMart 100% cotton flannel.
For the Cyclo, Tom's sweatshirt material is great, but it's expensive and you really need to move to a new spot after each application of the S polish. In fact, I've had the best luck by polishing the S with the Cyclo until it's ALMOST gone, and then moving to clean flannel to finish polish. I then do the next pass with the slightly used flannel from the previous pass, and again move to a clean area to finish it off. If this doesn't make sense after reading the material on Tom's web site, pm me.