During our remodel last year, we unfortunately installed the Toto Aquia IV in our guest bathrooms. Prior to this, I foolishly thought that toilets were pretty much created equal and didn't give them much thought. Boy, was I in for a surprise!! The Toto Aquia IV taught me about such things as "target zone" and water spot size... which are both very problematic with this model. The Aquia IV has a weird "shelf" that stuff sticks to and the "water spot" is really small. Both of these things contribute to it being an awful toilet. I initially approached the Toto rep who said something along the lines of "yeah, that toilet is a "scrub and flush" model", which really pissed me off. I finally got them to agree to replace both toilets because they are not advertised as "scrub and flush". Instead, they claim that the CEFIONTECT finish and the incredible Dynamax tornado flush make it very efficient - not so. Long story short, I need advice on replacement options. I am looking for a skirted, elongated, universal height toilet, that does not have the same issues as the Aquia IV. I don't care much if it is dual or single flush and one or two piece. I just don't want my guests to have to use the toilet brush... lol. Thanks in advance.