Pros: Incredibly easy to use, great on windows
I had a chance to use my Ecotouch waterless car wash. I was skeptical of how good it would work, but I was pleasantly surprised. For normal dirt and grime on the car, it looks just as good as if I had gone to the car wash down the street and dropped $25. I found it really looks great on windows.
The only weakness (and admittedly I didn't think it would work) was that it couldn't get off the calcium stains I have on the side of my car. Also, I've never been much of a fan of getting out the bucket and rags, mixing the forumla, etc. so this was a very pleasant change of pace to just walk around the car with the spray bottle and wipe it down. I think I did the whole thing in 15 minutew.