Used Noxon, Blue Magic, Never Dull, and Mother's Mag & Aluminum Polish on aluminum wheels, valve covers, air cleaner, and A/C compressor. All are acceptable. I prefer Mother's and Blue Magic on the wheels and air cleaner, primarily because they seem to do the best job on aluminum. However, I prefer Never Dull on the valve covers and A/C compressor because it does not leave any residue that is hard to get off the brackets, bolts, and other engine compartment nooks and crannies. I don't think it gets the parts as shiny, however. On very hot days, Mother's tends to get pretty runny. I don't know if Blue Magic does as well. I like the paste consistency. Have not tried any of them on chrome. I use Mother's Chrome Polish on the exhaust, grille, and bumpers.
