The Toto Drakes moves 900 grams and is the one to beat. Elongated bowl $220
The Cimarron works well, as does the Toto Dalton.
Both come in comfort height.
The Dalton comes in regular bowl $185 and elongated $195, and moves 650 grams.
The Mansfield Alto 160 regular bowl is of lessor performance, they are a builder grade toilet moving something like 280 grams
We replace the Mansfield all the time for better products.
My daughters new home had three, which they plugged the first day they moved in.
They suffered with Mansfield Alto toilets for 1.5 years before they were thrown out.
We put a Sterling in down stairs, which was better, but still plugged.
A Cimarron went in the Master, better, but still plugs
The Main bathroom that gets most of the use, got the Toto Drake, no plugs yet.
That was two years ago.
TOTO Drake 800 grams by Veritech, Video