Salmonica, you may find the following thread helpful in answering your Soiree question.
Any opinions on this toilet? How many grams
does it have? Does the Double Cyclone action
remove all the "debris" from the bowls sides?
I had an UltraMax and was not pleased with
the low water line in the bowl as it didn't
fully cover "debris" and created an out house
smell. Also, when it was flushed the water
didn't always swoosh completely around the
bowl and would leave stains on the sides....
I'm also considering the Drake.
The Drake is an excellent choice. You want a toilet with a fairly large water spot to cure the problem you mentioned. The Sanigloss option would be worth considering as well.
If you thought the Ultramax had too little water in the bowl, then nothing sold since 1992 is going to work for you in gravity bowls.
All new toilets use 1.6 gallons or less.
Pressure assist toilets may have more water in the bowl, so something like a Gerber Ultraflush may be better for above average amounts in the bowl.
You may want to consider a used toilet that uses 3.5 gallons or more too.
Terry, would you please mention which 1.28 or dual flush systems have the largest water spots or less dry bowl areas?