You couldn't pay me to purchase any kind of touchless wash system because NONE of them will actually get your car clean. ALL of them will remove big dirt.
NONE of them will remove the film that remains behind, which you GRIND INTO YOUR PAINT when you dry your car. You can MAKE YOUR OWN touchless wash system which in reality, requires you to TOUCH YOUR CAR. Everything else is nothing more than something used to knock off the big dirt on your car. Hell, you could use
one of these to do that. It is about as worthless as the system you are looking at.
If you REALLY want to knock some dirt off your car, you neeed a PRESSURE WASHER. Keep in mind that it can take some paint off too if you get it too close to the paint.
See
this thread for more information on touchless washing.