Well, The Insight is my favorite and I'm averaging over 70 MPG since new.IMA works. The Insight and the new Accord hybrid were not on your list, so I didn't vote. If I had to choose from the rest it would be the Prius. (You didn't mention the mileage for the Suzuki.)
Looks like a nice site, but a 25 MPG goal sucks. The Europeans would die of laughter. Even my Mother's CRV sport Utility does better than that! If as some are predicting 20 percent of the fleet are hybrid by the end of the decade, they would have to get infinite
gas mileage to drag the rest of the fleet up. Most of the other cars on your list would be as effective as a fart in a thunderstorm at bringing up the average. Five years from now they will be the ones dragging it down. That is why I voted for an Insight with my hard earned cash. Driving a 70 MPG Insight forces those curious enough to inquire to have a major Paradigm shift in a way that a 30 MPG car never could. I go out of my way to be politely informative, for although They probably won't consider an Insight they will likely consider a hybrid when the time comes. Sorry if I sound harsh, but we need dramatic break throughs, not gradual adaptation, if North America is to survive and thrive.
I'll get off my soapbox now.