EcoUltramax or EcoDrake

These are the new Totos, 1.28 per flush. I am in the market for new toilets and I just discovered that there is a $125 rebate for these models in my jurisdiction. There's been a little discussion about the EcoDrake, but I can't find anything about the EcoUltramax, which would be my first choice. Any new thoughts on this subject. If there is a similar thread on the site elsewhere, I apologize in advance.

Thanks.