The Maris is like an Aquia.
I had the Aquia in my main bath for a while. It worked well.
We've sold a few hundred of them. When people like a product, they don't tell anyone. They just keep buying them.
The Nexus is like the Drake in performance, but skirted. Or you can say it's like the Vespin II
I have an Eco Ultramax II and an Eco Vespin II at the moment. And yes they work well.
Many of the new bowls are 1.28 or dual flush now. They are working. I've installed a few Kohler 1.28's recently and they have been working fine too.
It's the way the industry is going.
If I have a complaint, it's more that they replaced an old 3.5 or more, more water in the bowl, and then moved to a 1.6 or less.
Less water in the bowl, maybe some touch up cleaning and a big savings on water usage. Noticeably less on the water bill.
I have not installed the Drake IIG yet with 1.0, but it does have Sanagloss and specs show that it will work.
The Aquia used to work at 0.9 for me.