I use 409 and paper towel. Works great.
I read on the VPI forums about the best way to clean their aluminum platters. A mixture of baking soda and water. The poster said Windex and similar cleaners can cause pitting. I assume this is with excessive/prolonged usage. I started using the baking soda water. It's cheaper and works well.
Years ago I read about a product that Turtle Wax made called Clear Guard. It was formulated for vinyl/plastic car interiors. Has zero water. Someone recommended it as a cleaner/conditioner for electronics' casework. I used it and like it. I still have some.