The one piece are pretty good looking, but I never owned one. I've
heard so many complaints about them that I'd not buy one. Maybe new
ones are better though.
I've recently installed a couple of Kohler 1.6 gallon comfort height
units. They work well every time and stay clean.
The one piece units that do not have power assist are at a disadvantage because
the drop height of water is less. That said, there are some excellent ones. We
bought two from Costco about a year ago that work great. Went back a few months
ago for a third. They switched brands and the latest one doesn't work quite as
I'd make sure your toilet is rated for 1000g from the full MAP report:
If it were me, I would stick with the two piece toilets.
That's because single piece toilets often require special parts that are
only available from the manufacturer; like the toilet trip lever, for
example. You might have to pay $40 for a trip lever from Crane or
Kohler, whereas a $3 plastic Master Plumber trip lever from Home Depot
will fit on their two piece toilets.
If you have a rent house, and the renters are, ummmm full figured,
probably more like morbidly obese, and they think the crapper is some
kind of lazy boy recliner... a one piece toilet might be just the thing
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