Windows Phone 7.5 'Mango' killer feature - Voice-to-text

In an era where technologies compete on brand rather than features, I'm always on the lookout for features that differentiate one platform from another. I think I've found a feature that differentiates Windows Phone 'Mango' from the pack - Voice-to-text.

Windows Phone 7.5 'Mango' was released to manufacturing (RTMed) a few days ago so now begins the long wait for handsets to appear running this OS. But when it does come out, I really like the sound of the voice-to-text feature. here is is being described by Bill Pardi on the Windows Team Blog:

'On a recent run around town with my wife to grab dinner and pick up one of the kids, a text message came in from my son. Not an unusual event in itself, but what made this message interesting is that my phone read it aloud to me - and I replied back with my voice.'

Pardi calls this a 'game changer' and I agree. Voice control on iOS and Android isn't anywhere near as sophisticated and integrated as this (I've never really managed to use the Voice Control feature on iOS at all .. no idea why). And what's more, this technology actually seems to work!

I like! I like!

This is the first time that I've actually looked at the Windows Phone with interested ... could a workable voice-to-text feature be a killer app or will this be something that we'll soon see being baked into Android and iOS too?