the biggest grief i have with easywash is that the "underbody spray" dosen't really spray the underbody because the sprayers come from the sides of the car. esso, for example, has a sprayer that you drive over as you enter the bay. also for the same service, esso is almost $2 cheaper. also, the wheel cleaner sucks, and you have to clean your wheels with a brush yourself.
however, easywash is great because they have 3 wash bays and you can pay from the lineup, whereas others only have the single bay, and you have to run to the cashier at some point and line up to pay. also, if you're not happy with how clean your car is washed, you can consult with the easywash attendant and if they are in agreement they will immediately wash your car again with the same option you paid for