Not a pro here, just a homeowner. I put in a Kohler Cimarron about 2 years ago, and the Cimarron uses the CLASS 5 flushing system. The flush is great - similar to an airplane. It sucks the bowl content down very fast, but the water runs straight down the bowl. No 'swirl', so there may be some skid marks from time to time. I haven't had to use a plunger once with the Cimarron, so I'm very happy with that. Not sure about the model you are looking at, but hope this helps ..... oh, yeah. GO GIANTS!!