We have a service man in our area that says Speed Queen is the only way to go.
About 6 months ago we got a new Matag, (this model had a glass top), and set on "Large Load" it tried to wash and rinse in approximately 4" of water.
It didn't even get all the clothes wet, much less clean. If we put it on "super size" it washed and rinsed in about 13" of water and our water bill went up $20 per month.
There just wasn't any middle ground or adjustments on it and we returned it.
Good Luck