Im currently using Autoglym Autorinse and have been for a while
Just wash the car as normal then Spray on then rinse off with a open ended hose within 10mins the car is more or less dry
it leaves a visible shine and beads for a week or so after
However Megs last touch and Autosmart Tango can also be used for this but can also be mixed stronger then used as quick detailers
I stopped using Demon Shine a year ago, as good as it was it seemed to ruin my MF drying cloths and caused my windscreen to smear badly (It wasn't applied directly to the windscreen).
Hope this helps
Ben