I've just given the voice recognition search called Evi a go. It was very good at recognising my voiced questions - Better than google voice search and better than dragon dictation. Some think this will be a competitor to Siri. As I don't plan to update my phone and Apple doesn't see fit to release Siri for it, they just might be very right. There are a few features it will need before its a true alternative, but I was impressed.
Web search is targeted, local time queries came back with the answer and a unit conversion were all good.
I think it needs some more local information to enhance its responses.
And I'd like to have some email, Evernote and Send to other apps integrations.
99c in the app store.