Not sure if they're any different, but I used the left side wash and paid the $10 simple wash. It got some of the dirt/salt off my car, but in the end...it didn't dry, I could still see every drip and wiper outline on the windows. When I got out to look at the rest of it, my guess is the very top layer of dirt got off. ALL the salt was still on the sides. A COMPLETE waste of money. This is my second time here, and I remember the first time being just as pointless (which is why I only chose the cheapest option). It would either take 2 washes, 1 wash and a towel dry (not included), or your own washing to actually clean your car.