IMHO people toss around "just use Novus" way too much. I still remember the poor guy who bought those Metallica coffin decals and then tried to "clean" his game with Novus. Trashed the decals. He responded that he thought it was wax. He got that impression from all the people constantly saying to use it. I probably need to stick a note about that in my AC/DC playfield decals packages.

Novus isn't a cleaner, it's a polish. Big difference! If you're trying to shine a clear coat with a mild abrasive, sure, go for it. But you're grinding off micro layers of your surface when you do that, it's not actually "cleaning" anything like say Simple Green.