If you get the Gerber Ultraflush, then anything Flushmate would be better. The WDI EcoFlush should have never made it to market.
Both Gerber and Toto make standard height and comfort height.
The standard height Drake elongated is either the CST744S or the CST744E
The tall Drakes are the CST744SL, CST744EL and CST454CEFG
For pressure assist, you can also look at the Kohler Highline with Flushmate in a 1.1
It uses the Flushmate. The highline is a tall bowl, but Kohler also makes a standard height pressure assist.
I sell all of these, but most of my "repeat" business has been Toto.
The Toto web site shows two dealers in Austin and one in Round Rock
Mail order doesn't work on Gerber. I used to break almost every Gerber I shipped.
In fact if you drop a porcelain bowl from six inches, it will break.
Here is a almost new Gerber Ultraflush that was replaced with a TOTO Ultramax.
The Gerber works fine, so James will be finding a home for it.
The homeowner wanted something a bit less noticeable when flushing.