I've used all three.
1. ICE Synthetic Wax - applied with an applicator.
2. Ice Synthetic Spray Wax - sprayed directly on car.
3. Ice Detailer - sprayed directly on car.
"1" above works great - apply over whole car, then wipe off. takes all of 20 minutes to do the car.
"2" also works great. I spray on and wipe off a section at a time.
"3" works ok, but not as good as "2" above. I once tried to mix both "1" and "3" together, but they don't mix. They are like oil and water. I now very seldom use this anymore. Once in a while, I will use it on the windshield glass, as it does work there.