There hasn't been a lot of talk on here to date about the "Drake II 1G", CST454CUFG. What I have generally heard and seen has been positive, but the first-adopters of this toilet are likely to be people who put water saving above all else. I have thought of buying one just to try it out, but so far haven't done so.
The Drake II, CST454CEFG (the "E" is for 1.28 gpf, the "U" in the other model is for 1.0 gpf) is one of the most-popular in the Toto line. It is a good value, with Sanagloss, the double-cyclone flush, and universal height, all standard. It gets consistently-high reviews.
The Original Drake, about $100 or so cheaper on the street price than the Drake II, and a different-looking toilet, is also a fine performer. The "Eco" version (1.28gpf), CST744E, is regular height and without Sanagloss (although it is an option).
Terry repeatedly has said that he has installed hundreds of Aquias over the years and that it has the lowest return rate of anything he installs, well better than 99% satisfaction. The people who choose that toilet like that toilet. And, unlike some of the Big Box or Costco dual-flush models, the flushing mechanism is robust and doesn't break easily.
Any of these would be a good selection. The key is to shop around your local plumbing supply places, getting specific quotes on the model and color you want. The price is going to vary a lot from place to place. Do your research, and you can get a good deal.