Mikeyc
TheDetailingHandBook.com

I now own all three brands of rinseless wash that exist (at least that I am aware of). Please keep in mind that waterless washes are different from rinseless washes and will not be included in this test.
Rinseless washes seem to be a pretty hot subject and many detailers/detailing enthusiasts are switching from the traditional hose wash to rinseless washes for all their washing needs. Rinseless washes are also used widely by those who live in cold climates to wash in the garage during the winter months.
I haven't actually performed the comparison as yet, but it will likely happen sometime this week since I just received the DP product today. Here is the plan . . . 4 buckets will be used. One bucket will contain rinse water and the other three will contain 1 gallon of water and the amount of rinseless wash prescribed in the product's directions. NO QD WILL BE ADDED to any buckets. This is to keep it as fair a fight as possible since two of the three products claim not to need the added lubricity QD provides. The washing will be done with a lambs wool mitt and drying with a WW MF.
Here are the contenders:
Optimum No Rinse Wash & Shine
http://www.autogeek.net/optimum-no-rinse.html
Detailer's Pride Four-In-One Rinseless Wash & Shine
http://www.autogeek.net/dp-rinseless-four-in-one.html
ProtectAll Quick & Easy Wash
http://www.protectall.com/qelg.htm