Each to his own.
Over the (many) years I was trad, I tried just about everything - all the 'proprietry' stuff: Squeegee off, Unger Liquid/Pills etc
I still prefer Fairy - a bucket of water with Fairy in it will still foam on the glass at the end of the day just as well as it did to start. Slip is excellent, you can see where you've been and the finish is always perfect, plus if you run out it's available everywhere
