Check out Petit. I, and many others, feel the quality of the machine, customer experience, and wash performance far exceeds it's competitors in the touchless market.
There are some really good machines out there. First and foremost look at the support. Who’s going to help you and how fast are they going to be there when you break down
It's about reliability, speed and ease of use for the customer as well as cleaning.
My old Superior machine cleaned just fine, but my new Razor is far better. Faster wash times, easier for customers to load in, much more reliable. And the light show and speaker that bosses the customers around ( guides them ) is great!