Seeking Review on Toto Whitney Toilet

We are renovating our bathroom and I am trying to do the environmentally friendly thing by going with 6 litre toilets (even though my hubby is old school and favouring the 13 litre). Your reviews, Terry, have convinced me there are some decent, working toilets in the 6 litre. I can't afford the Guinevere (like the style since I'm going with old fashioned toilet). I didn't see a review of the Whitney and wonder what you think. Its number is much like the Dartmouth and it looks much the same. The Whitney model I'm looking at is CST754SFN. This, I think, has a price of $528. here in Canada. Any thoughts or info on functioning? Thanks.

It's like the Dartmouth, which is very much like the Drake.

It's a G-Max Toto with style.

It should work out well.