Mansfield toilet dual flush -Opinions please.

In order to cut down on water usage (small septic tank) we are thinking of installing a Mansfield toilet - dual flush. My experienced plumber doesn't really know about them although he tends to prefer Mansfield's as a working toilet. This toilet will flush one gallon of water on the downstroke of the flush handle and 1.6 gallons on the upstroke of the flush handle. Comments and opinions favorable and unfavorable please esp. as to the workability of this arrangement, breakdown and repair, etc. Thanks, Joe
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.