I just recently purchased a CR Spotless system,it works great and allows me to blow dry my car with a leaf blower.I do not use towels to dry,and any water left leaves no residue unless the wind is blowing up the dust. If you could find a dust free environment you could leave the car wet w/o spots appearing.I think I spent 300.00 on the system with extra filter media,not bad when you figure how much the Viper cost,I have been really impressed with it.I heard all the negative comments about its effectiveness before I bought,but so far it has worked exactly as advertised.As soon as I use the orbital on the car I am going to quit quick detailing and only touch the paint when I wax or wash,to see if that decreases marks in the paint.Only downside is that my wife figured out it doesnt leave residues on the windows so now I'm washing windows on a regular basis.