I've been on the bilberry for a few years and it works well, but the next purchase will be the bilt and hamber as it seems to win all the tests! I use their auto foam in a garden sprayer 80 ml topped up to 2 litres with hot water, spray on and jet wash off 5 minutes later, it does a fantastic job of cleaning the car without touching it with a cloth.I have just started using bilberry but have heard good things about bilt hammer. It's more money though and effectively the same thing
Bilt Hamber Auto Wheels is very good. Smells like a bad guff though but I can put up with that as it works so well
I use that too and have found even watered down 50/50 it works very well indeed only lasts twice as long