On the odd occasion that I use a self spray wash place (usually only in the winter to remove road salt), I don't dry the car off. Spray washes don't remove all the grime, and wiping it around with the towel (even MF) is going to mar the paint to some degree.
Plus, most spray washes I've gone to hardly have any soap coming out...it's almost a total waste of time.
Regarding the touch-less automated washes, my pop uses them on occasion and the result is poor-to-fair...not worth the money, IMO. Properly hand washing it yourself (or by a professional) offers the best results.
For those who want to avoid doing a traditional hose wash, check out Optimum No-Rinse. When used properly, it cleans dirty cars safely. Heavy grime or debris should be rinsed with a hose or pressure washer before using ONR. There are plenty of threads on Autopia about using ONR properly. There are also some videos on youtube.
No Rinse Wash and Shine