Take a look at the Drake customer review thread. Drake Review Thread
As described therein, Terry has used the Drake in a number of places like restaurants, churches, etc..
It goes without saying that the Drake flush is legendary.
The product you are talking about is the Drake, not the Drake II. To the extent you need the ADA-compliant product, its model number is CST744SL. You need the "L" in the model number for it to be ADA-compliant. It's a little-more expensive than the basic Drake CST744S, but not much.
It is also available in a 1.28 gpf version: CST744E and CST744EL. Most people say that the "E" version works just as well as the "S" version, and the E version is eligible for "Watersense" rebates of up to $100/toilet in the jurisdictions that offer them; several in Virginia do. Rebate Finder It's the same toilet with different tank guts (i.e. fill valve and flapper).
If you want the Drake II (a little fancier-looking), the basic model CST454CEFG comes with easy-clean Sanagloss, a "universal" height (ADA-compliant with the proper seat), the "double-cyclone" flush, which does a great job of flushing and bowl cleaning, and a 1.28 flush. If the toilet is getting a lot of use, perhaps the 1.28 flush will save you a little more money on water.
Both toilets use parts that are readily available at Lowe's (Korky flapper and Korky replacement fill valve), and the standard model is on a 12" rough-in.
As far as seats go, you can pick from any number of brands, but the Toto open-front commercial seats are pretty nice and solid.