Microsoft Tellme : Apple Siri...

Apple has proved its quality in an Australian Blog Tech AU. Both the Windows Phone  and the Apple iPhone 4s have been equipped with their intelligent jeeves on their respective smart phone operating Systems.
In an open comparison between the Apple Siri and the Microsoft Tellme, a windows Phone and an iPhone 4s were kept side by side and were given same voice commands and it is how they did interpret the commands...

Original: "Create a meeting tomorrow at 10 AM."
Tellme: Searching for "creating a meeting tomorrow at teen anal"...
Siri: OK, here's your meeting. Note that you already have a meeting about TAE Course at 8:45 AM...

Original: "Send text to Simone."
Tellme: Searching for "stain detector simo"...
Siri: OK, I can send a text to Simone Arnold for you... What would you like it to say?

Original: "What time is it in Perth?"
Tellme: Searching for "what time is it impo"...
Siri: In Perth, it's 5:00 PM.

Original: "Play artist Skrillex."
Tellme: Searching for "play artist screamworks"...
Siri: Now playing Skrillex.... [music plays]

Tellme vs Siri....

As you can see Microsoft Tellme lacks in the speech interpretation, it does something while you want it to do something else. Another advantage of using Siri is that it gives very realistic and lively answer to your questions, while the answers by Tellme are quiet inconvinient. So if you do not want to mess up your things around then the best option is Siri...My vote goes to Siri...