Long post incoming.
I picked up the Sears buffing kit, even the black compound, the most aggressive, supposed to be used for removing rust, wouldn't touch the corrosion. If I was content with a clean but dull luster, steel wool and polish would do it. It actually didn't look too bad that way, but I want them to shine. Upon close examination, the aluminum is actually pitted. In order to get the pits out I needed to go clear down to a 320 grit wet/dry sandpaper and work my way up to a 2000 grit. After that I buffed with steel wool and Meguairs chrome and aluminum polish, then the same polish with the terry applicator. For the final polish I tried something I read online, I put on a latex glove and just polished with my finger, that way you don't get any swirls from the terry applicator. Then I buffed with a super soft cloth. The pics may not do it justice, but the first pic shows the whole rim, the spoke on the left is the one I worked on. The second pic is a close up of the polished spoke and the third is a close up of a raw spoke. I worked up a little too fast so there are still some fine scratches in the polished spoke, I need to go back to maybe the 620 or 1000 grit and work back up, but I still think you get the idea. It will take some time but I've got all winter to whittle away at them. My goal here is to have some decent looking rims for cheap. They were given to me so if I can invest some time and elbow grease to make them look decent that's okay, I enjoy messing with stuff like this. One thing I learned, the guy helping me figure this out owns a shop that deals in automobile paints, polishes and other stuff. He's been around body shops and paint shops his whole life. He told me you have to be carefull with all chemicals and metals. Chemicals seemed obvious but I hadnt thought about the metals. He told me I didn't want all that aluminum oxide (the black stuff from when I polish) getting on my hands and in my system, he had me put on a pair or rubber gloves to do the work. Makes sense and my hands aren't black when I finish.