While not terribly more accurate at guessing what you spoke than Iris or Skyvi, Dragon Go! features Dragon Carousel, a multi-tabbed searching experience that will search among many different providers. So if your answer wasn't on one of them, you can just tap a different search tab and the result should be already available.
It does a pretty good job of guessing things you might want to do based on your search. For example, "show movie times for Nashville, TN" pops up a list of what theaters are closet to me, show times, and purchase links on Fandango. "Is it going to snow?" brings up Accuweather for the area and a Twitter feed tagged with the city I'm in. One of the interesting searches they have is "what are the planes flying overhead," which will return a Wolfram Alpha tab with a list of everything in your general area.
Dragon Go! does not currently work correctly with Ice Cream Sandwich based ROMs, but support is planned in the near future.
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