By process of elimination, I think I've pretty much decided on the Toto Eco Promenade CST423EFG. It's got a round bowl, but that helps to conserve space. It's ADA height and it has the E-Max flushing system. There's not a lot written about the Eco Promenade on this forum, so I'm curious about it's performance. I did read in another post that virtually all Toto models with the 1.28 GPF perform well, but it would help me to hear from someone who has first-hand experience with this model.