I believe the Tulalip Casino in Marysville has the Kohler Class 6 in the rooms.
The rinse is now 360 in the bowl, no longer missing the back.
Still very little rinse, and what I considered a loud flush.
But the rooms there are very nice.
The shower has three shower heads, nice.
The trapway design has bends that are too tight.
In real use, they will clog more then a toilet with a good trapway.
It is not a dual flush. I don't know why they would think that.
The last time I went there, the Cimarron was leaking and refilling all night long.
It needed a replacement flapper after one year of use.