I used SQ solid tubs
for years when I was in college.
They were fun to watch and listen to, but they didn’t perform very well. Except that the overflow rinsing was very effective. And they were very fast and efficient, especially with spin draining and spin spraying.
The tub was small. That tended to bunch up things like jeans and pants, which made it difficult for them to roll over even when it wasn’t overloaded. In addition to the tub being too small, the first few minutes of washing splashed a good deal of the water over the top of the tub,so the lowered water level made it even more difficult to roll over. The agitator design didn’t help either. Even if you only put two pair of jeans in it, it would still have difficulty rolling over.
And finally the 210 degree, very fast agitation was very hard on clothes. That was compounded by the fact that they would start agitating when the tub was only half full of water. Corduroy pants came out beaten to hell. And everything was linty.
It was great for things like a load of tidy whities. And the sounds it made were wonderful. Especially the unique water splashing sound it made on agitation.
Robert has said more than once that it rated dead last in CR (although their opinion can be off the beam, that was one instance where it wasn’t).
I think one of the reasons the solid tub SQ could withstand nonstop running 24/7 under college dorm overstuffing conditions was that with the agitator design, an overstuffed tub didn’t really strain it. It would just compress the clothes to make way for the agitator sweep, and the clothes would sit there motionless, so it didn’t really have to labor moving a heavy load around. The only time they btoke down was when overloading would result in a sock going over the top of the tub. The maintenance man would always pull it out with a coat hanger instead of taking the machine apart.
Bottom line - a very fun machine to watch and listen to, but not a good performer.
The 2016 design, though not as fun to watch, performed infinitely better.