American Standard Edgemere is round and two-piece at 1.28 GPF; Swiss Madison Sublime II is round and one-piece at 1.6 GPF.
Edgemere uses less full-flush water. Rough-in, seat height, clearance, shipping eligibility and local water-use limits still matter.
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With no preferences selected: Boulevard One-piece Toilet — 2891128.020 is one option to compare.
Your choices are compared with each model’s product details. A missing or conflicting value stays unknown and cannot satisfy a choice you select. The starting order helps you browse; it does not rate real-world performance.
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Put the bathroom drawing ahead of the flush figure
Bowl shape and construction let you narrow these 10 toilets, but neither supplies the rough-in, seat height or room clearances. American Standard Edgemere® has a round bowl and two-piece construction; Swiss Madison Sublime II pairs a round bowl with one-piece construction. Start with the exact toilet's installation drawing and the space around your existing drain.
The comparison reads maker descriptions rather than observing bathroom installations. Before ordering, match the rough-in and available clearances to the selected design, then inspect its seat-height drawing and shipping eligibility.
Lower water use does not prove a cleaner bowl
Full-flush volumes range from 1.28 to 1.6 US gallons per flush. American Standard Boulevard® uses 1.28 US gallons per full flush; Swiss Madison St. Tropez uses 1.6 US gallons for its full flush. On dual-flush toilets, this field represents the larger flush, so it does not describe water use for every press of the button.
Use the water-use ceiling alongside bowl shape and construction. The flush volume tells you water use, not cleaning performance or clog resistance; those outcomes cannot be read from a one-piece label either.
Before you buy
Will a matching shape fit my existing plumbing?
Measure the rough-in and available space against the installation drawing. American Standard Boulevard’s elongated, one-piece construction cannot establish compatibility with your existing plumbing.
Which dual-flush volume does the table use?
It uses the larger full-flush volume. A reduced-flush figure is not substituted to make the model appear to use less water in this comparison. You retain the same bowl shape. Edgemere suits consideration for lower full-flush volume. Sublime II changes construction. Rough-in, seat height, clearances, shipping eligibility and local water-use limits still need the exact model.
Does lower GPF establish better cleaning?
It describes gallons per flush rather than cleaning or clog resistance. Champion 4’s full-flush figure alone cannot establish its performance relative to other designs.
