I find Mills wax used after a good clean with Baby Bum Wipes cleans n polishes better than anything.

I then give the treasure cove kit a decent go but find mills wax with the treasure cove attachments is the bomb ! (that means great.lol) 

Novus over rated i find. Some people love it, some dont.

For those who feel mills wax is not good. Used it on 25 machines, all segas, williams, data east, bally etc playfields, never had one issue ever.

I then use baby bum wipes after cleaning with mills wax etc, removes any residue that may be left.

Baby bum wipes wont hurt a babys ass, so it wont hurt ya playfield. Just excellent to use. the results are amazing !