CST454CEFG ...I find that it gets skid marked almost every time you do a 2. ... he rarely has this problem on her fairly low end American Standard 1.6gpf...
For this kind of money, I expect the toilet to rinse pretty well.
The cheap AS most probably isn't a syphonic toilet (and because the CST454CEFG is syphonic all the water doesn't come out of the bowl rim.)
At work we have an old Eljer 1.6gpf that works great, but even it occasionally streaks (which is expected when you have over 20 bus drivers regularly using it.) The maintenance guy has now set it to about 0.8gpf (half filled from the 1.6gpf bowl line) and it still works great. Lots of water still gets flushed down the drain. Too bad that one can't find that toilet any longer. It has a very short inverted "U" trapway.
As far as the CST454CEFG goes, it may be that you need a bigger water spot (Drake, Entrada), a seat that is pushed forward a little, or a 1.6gpf toilet.
It isn't just the gpf, though. I had some Briggs 3.5gpfs that needed two flushes to evacuate fully.
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