QEW vs. spot-free rinse?

[The Pit]

Lately, I've seen lots of threads on spot-free rinse water. Some people use DI or RO water, and still others just plain soft water.

Don't want to rehash those threads, lets just assume a spot-free rinse (i.e. no drying needed) is available.

So, then, what would be the faster method for washing a moderately soiled (no QD) car?
a. Hose and soap with spot-free rinse
b. QEW wash
c. 'Bout the same, its a wash ( :lol )

I've used neither one and am wondering which would save more time, DI/RO rinse or QEW, when compared to the standard wash, rinse, WW dry.

 

[chml17l]

It's probably a "wash" between the a)Hose and soap with spot-free rinse and the b)QEW. It also greatly depends on how daring/fast you are at a QEW wash, too.

A traditional wash would take longer than either a or b.